Executive summary
The phrase “more time for my own thoughts” captures a real and important dimension of advantage. Wealth does not simply buy goods; it often buys temporal autonomy: fewer compulsory hours, more control over when work happens, more ability to outsource low-value tasks, more insulation from waiting and administrative friction, and better access to policies and services that protect discretionary time. In that sense, the capacity to secure protected time for reflection, contemplation, reading, journaling, thinking, or simply non-reactive mental space is often a privilege of wealth. But the strongest evidence suggests a more precise formulation: wealth increases the probability of reflective time; it does not guarantee meaningful reflection. citeturn11search4turn12search0turn14search0turn20search2
Across countries, richer societies tend to work fewer hours, and in OECD countries full-time employed people devote roughly 15 hours per day on average to leisure and personal care, with large country differences. Over the last 150 years, annual working hours fell sharply in early-industrialized economies, especially in the richest ones. Yet within countries, the story is more complicated: in the United States, leisure rose substantially from 1965 to 2003, especially among the less educated, but later research shows that this extra leisure was often of lower quality and more fragmented. In other words, having more nonwork time is not the same as having calm, self-directed, high-quality time for thought. citeturn7search3turn23search1turn32search1turn29search2
The distribution of reflective time is also deeply unequal. Women still perform much more unpaid care work than men in most countries; low-income people lose more time to waiting for basic services; and race, family status, and institutional setting shape who controls their day and who gets crowded out by caretaking, commute burdens, and schedule instability. OECD estimates show women do about 25 minutes more total work per day than men on average once paid and unpaid work are combined, because women do around 2 hours more unpaid work per day. The ILO estimates that 708 million women worldwide are outside the labor force because of care responsibilities. citeturn17search3turn17search1turn34search2
For wellbeing, the picture is again nuanced. Time poverty is associated with lower wellbeing, health, and productivity. Spending money on time-saving services is associated with higher life satisfaction, and experimental evidence suggests that buying time can increase happiness. But too much discretionary time can also reduce wellbeing if it erodes purpose or structure, and reflection itself can become rumination unless it is psychologically skillful. The best-supported conclusion is not that “the rich are wise” but that wealth can soften the time constraints that make wisdom, creativity, and careful decision-making harder to practice. citeturn11search4turn12search0turn11search0turn27search0turn26search2
For policy, the main implication is that societies should treat time as a distributive resource, not merely a personal optimization problem. Childcare, paid parental leave, shorter and more predictable working time, schedule control, better public services, and reduced waiting burdens can all expand the amount of genuinely discretionary time available to people who are not already wealthy. For individuals, the practical lesson is to convert any available wealth into attention-worthy time, not just into convenience or status: reduce low-value obligations, protect blocks of unscheduled thought, and cultivate forms of reflection that generate insight instead of rumination. citeturn34search2turn34search0turn16search0turn20search0turn35search0
Concepts and frameworks
A rigorous discussion starts with several distinct but overlapping concepts. Wealth is best understood not just as current income, but as accumulated resources and economic security that expand a person’s options. Time affluence refers to the subjective feeling of having enough time; time poverty is the opposite, a condition of chronic time shortage produced by high paid-work demands, unpaid care burdens, administrative friction, long commutes, or multiple overlapping obligations. Leisure is usually defined as time free from coerced or disagreeable duties, while contemplative time is narrower: discretionary time that is sufficiently autonomous, unfragmented, and cognitively protected to permit sustained reflection or self-directed thought. Time-use surveys do not normally classify “contemplative time” as a standard category, so it must often be inferred from combinations of leisure, personal care, solitude, reading, religious practice, walking, journaling, or other low-pressure activities. citeturn24search1turn11search4turn18search2turn33search1
Philosophically, the classical root of this idea is the tradition that linked leisure to thought. Aristotle distinguished the life of action from the life of contemplation and treated the exercise of the highest intellectual virtues as bound up with happiness. Modern discussions of leisure still reflect that inheritance: leisure is not merely idle leftover time but time freed from necessity and therefore available for self-directed ends. On this view, “time for one’s own thoughts” is not a luxury add-on to the good life; it is part of the condition for exercising higher-order judgment. citeturn24search2turn24search1
Sociology of time sharpens the analysis by shifting from “how many hours do people have?” to “who controls those hours?” The sociology of time emphasizes temporal coordination, institutional schedules, and temporal autonomy. Time inequality is not only about quantity but about interruption, unpredictability, synchronization with others, and the capacity to keep time in large enough uninterrupted blocks to be useful. Recent work explicitly describes time as a form of hidden privilege because social structures distribute control over time unevenly across class, gender, and institutional position. citeturn13search3turn13search2turn18search2
Psychology adds a second distinction that is crucial for the user’s framing: reflection is not the same as rumination. Research on self-reflection finds that insight tends to predict better wellbeing, while rumination predicts worse psychological outcomes. Related work on self-distancing shows that stepping back from one’s own problems can improve emotional processing and wise reasoning, suggesting that “my own thoughts” become beneficial when they are reflective, not self-immersed and repetitive. This matters because a wealthy person may have ample private time yet still fill it with stress, status comparison, or compulsive digital stimulation rather than contemplation. citeturn2search0turn27search0turn26search2turn26search1
flowchart LR
A[Wealth and economic security] --> B[More temporal autonomy]
B --> C[Less compulsory labor]
B --> D[Outsourcing and paid services]
B --> E[Better housing, transport, remote-work access]
B --> F[Administrative insulation]
C --> G[More discretionary time]
D --> G
E --> G
F --> G
G --> H[Possible reflective time]
H --> I[Insight, creativity, wiser choices]
H --> J[Or distraction, status anxiety, rumination]
The core analytical claim, then, is not that wealth mechanically causes contemplation. It is that wealth often creates the preconditions for contemplation by expanding a person’s control over burdensome time uses. Those preconditions remain mediated by culture, personality, technology, social norms, and institutional design. citeturn11search4turn20search2turn12search0
What the evidence shows
The empirical foundation for this topic comes from a mature time-use measurement infrastructure. The most relevant official sources are the OECD Time Use Database, the U.S. American Time Use Survey, IPUMS Time Use harmonized files, Eurostat’s time-use work, the UN’s 2024 Guide to Producing Statistics on Time Use, and the World Bank’s gender portal on unpaid domestic and care work. These sources are the best starting points because they offer diary-based evidence rather than vague self-reports of busyness. citeturn33search0turn8search6turn22search1turn33search1turn3search1
Cross-nationally, OECD evidence shows that for full-time employed people, average time spent on leisure and personal care is around 15 hours per day, ranging from a little over 14 hours in Japan to about 16.5 hours in Italy. European countries tend to provide more time off than many others in the OECD. At the broader macro level, Our World in Data shows that richer countries generally work fewer hours than poorer countries, and that workers in early-industrializing economies used to work more than 3,000 hours per year in the late nineteenth century before annual hours fell dramatically over the next 150 years. citeturn7search3turn23search1turn23search0turn7search1
Within countries, however, more economic advantage does not map cleanly onto more leisure. Aguiar and Hurst’s influential U.S. work found that from 1965 to 2003, leisure increased by roughly 6–8 hours per week for men and 4–8 hours per week for women, with the biggest increases among the less educated. But the later literature complicates that result: Sevilla, Giménez-Nadal, and Gershuny showed that the less educated did gain more total leisure than the highly educated, yet the quality of that leisure declined relative to more advantaged groups, with more fragmentation and less “pure” leisure. This is one of the most important findings for the present question, because it suggests that the true privilege may be not leisure quantity alone but access to higher-quality, less interrupted, more self-directed leisure suitable for reflection. citeturn32search1turn29search2turn29search3
We also have good evidence that higher income can produce a paradoxical sense of time scarcity. Kahneman and Deaton found that higher income strongly improves life evaluation, while their 2010 analysis suggested experienced emotional wellbeing flattened beyond a threshold. Killingsworth later found experienced wellbeing continuing to rise above that threshold in his data. A separate line of work by DeVoe and Pfeffer found that higher income and wealth increase the economic value of time, which in turn heightens feelings of time pressure. So the affluent may possess more objective time control while simultaneously feeling more rushed because each hour is experienced as economically costly. citeturn1search0turn1search3turn20search2
Perhaps the clearest causal mechanism linking money to time comes from Whillans and colleagues’ Buying time promotes happiness research. Across samples from the United States, Canada, Denmark, and the Netherlands, people who spent money on time-saving services reported greater life satisfaction, and in a field experiment working adults were happier after making a time-saving purchase than after making a material purchase. This is direct evidence that one way wealth becomes privilege is by converting money into freed discretionary time. citeturn12search0turn12search1
The table below summarizes the most important empirical studies to prioritize.
| Study or source | Geography | What it measures | Key finding for this question | Why it matters |
|---|---|---|---|---|
| OECD How’s Life? 2020 work-life balance chapter | OECD countries | Leisure and personal care, paid and unpaid work | Full-time workers average about 15 hours/day in leisure and personal care; women do more total work because of unpaid work | Best cross-national benchmark for “time off” citeturn7search3turn17search3 |
| OECD Time Use Database | 30 OECD countries | Harmonized time-use categories | Standardized categories for unpaid work, paid work/study, personal care, leisure, other | Best comparative official dataset citeturn33search0 |
| ATUS | United States | Diary-based full-day time use | The official U.S. source on leisure, work, care, and who does what | Essential for within-U.S. work on time poverty and leisure citeturn8search6turn8search0 |
| Aguiar & Hurst | United States | Leisure trends over 1965–2003 | Leisure rose substantially, especially among the less educated | Shows that time inequality is not identical to money inequality citeturn32search1 |
| Sevilla, Giménez-Nadal & Gershuny | United States | Leisure quality and fragmentation | Less-educated groups gained leisure quantity but lost relative leisure quality | Critical nuance: not all leisure is reflective or restorative citeturn29search2turn29search3 |
| DeVoe & Pfeffer | Mainly U.S./lab studies | Economic value of time and time pressure | Higher income/wealth can increase feelings of time pressure | Explains why affluent people can still feel “time poor” citeturn20search2turn20search4 |
| Whillans et al. Buying Time | US, Canada, Denmark, Netherlands | Spending on time-saving services | Spending money to save time is linked to higher life satisfaction and can causally increase happiness | Direct mechanism from wealth to discretionary time citeturn12search0turn12search1 |
| Giurge, Whillans & West | Cross-national review | Time poverty and wellbeing | Time poverty harms wellbeing, health, and productivity | Framework paper connecting evidence across fields citeturn11search4turn11search6 |
A defensible bottom line from the evidence is that wealth and reflection are related through time control, but the chain is conditional. Income and assets widen the opportunity set; what people gain is often not “leisure” in the romantic sense, but insulation from unpaid burdens, commuting, waiting, and inflexible labor arrangements. Whether that freed time becomes contemplation depends on how it is structured and defended. citeturn12search0turn14search0turn20search0turn29search2
Mechanisms and inequalities
There are several mechanisms through which wealth creates time. The first and most obvious is outsourcing. Wealthy households can pay for childcare, cleaning, meal preparation, transportation, laundry, home maintenance, and administrative help. The second is labor-market choice: higher wages, assets, or savings allow people to refuse some overtime, move to part-time work, retire earlier, take sabbaticals, or choose jobs with better schedule control. The third is technology-mediated savings: remote work reduces commuting time, and high-status knowledge workers disproportionately gained access to this after the pandemic. NBER evidence from 27 countries estimates average daily time savings of 72 minutes when working from home, though workers reallocated about 40% of those savings back into work itself. citeturn12search0turn14search0turn14search1turn14search2
That last point is important. Technology can free time without delivering contemplative time. Remote work reduced travel, but many workers, especially more educated workers, used part of the gain for more job time rather than rest or reflection. Cowan finds the post-pandemic U.S. shift to working from home concentrated among college graduates, who experienced relative increases in free time and time with children. This means technology can amplify time privilege when its benefits are concentrated in occupations already associated with higher pay and autonomy. citeturn14search2turn14search0
Cash also matters. A recent randomized guaranteed-income study in two U.S. states found that monthly transfers reduced labor hours modestly and generated the largest increase in leisure time, though improvements in subjective wellbeing faded over time. That result is illuminating for this topic: extra money can indeed purchase extra time, but the downstream effects on flourishing are not automatic. More time is a necessary condition for reflection, not a sufficient one. citeturn15search0turn15search1
The deepest inequalities arise around unpaid care. OECD data show women work longer total hours than men once unpaid labor is counted, largely because women do around two more hours of unpaid work per day. The ILO reports that women perform 76.2% of global unpaid care work and that progress in narrowing the gender care gap has been extremely slow. In 2023, the ILO estimated 748 million working-age adults were out of the labor force because of care responsibilities, including 708 million women and just 40 million men. These are not just labor-market inequalities; they are inequalities in who gets uninterrupted time to think. citeturn17search3turn17search2turn17search1turn17search4
Gender inequality also persists inside ostensibly egalitarian households. Recent matched-diary evidence from young Italian couples shows that women continue to do more unpaid work and have less genuinely discretionary leisure even in dual full-time households, and more traditional gender attitudes widen those gaps. This finding fits a broader pattern: increased female labor-force participation does not by itself equalize temporal freedom unless unpaid work is redistributed too. citeturn34academia52turn34search2
Class inequality operates through a different channel: low-income people often face more forced friction time. Holt and Vinopal show that in the United States, low-income people are more likely to wait for basic services and spend more time waiting when waiting occurs. That is a direct form of temporal inequality. A person who can buy concierge medicine, fast transport, reliable internet, proximate housing, and private administrative help is not just “consuming more”; they are bleeding less time in the background. citeturn20search0
On race and ethnicity, the evidence base is weaker than for gender because many cross-national time-use systems do not harmonize racial categories well. Still, U.S. higher-education research finds that time poverty contributes to race- and ethnicity-based gaps in retention and credit accumulation, and related work shows that time as a college resource is unequally distributed by gender and race/ethnicity. That suggests race matters partly through institutional exposure to time burdens, not merely income alone. This remains an important area where the literature is still underdeveloped relative to its social importance. citeturn31search4turn31search6
History, culture, and critiques
Historically, the aspiration to convert economic progress into thought-filled leisure is old. In the classical world, leisure was tied to the possibility of contemplation rather than to passive entertainment alone. In the late nineteenth century, Veblen famously argued that upper classes used both consumption and leisure as status displays, implying that “free time” could function as a visible badge of class position. In 1930, Keynes predicted that productivity growth would eventually make a 15-hour workweek possible for his grandchildren. Instead, rich-country working hours fell substantially, but the modern world did not convert productivity gains into universal contemplative abundance. citeturn24search2turn24search1turn30search0turn23search2turn23search1
timeline
title Wealth, work, and contemplative time
Aristotle : Leisure linked to contemplation and intellectual virtue
Veblen : Leisure class uses visible leisure as status
Keynes : Predicts productivity could enable a 15-hour week
Late industrial era : Annual hours fall sharply in rich economies
Contemporary OECD : Large cross-national differences remain in time off and unpaid work
Today : Time poverty, attention capture, and unpaid care constrain reflective time
Culturally, what counts as “free time” also varies. OECD comparisons show large differences in leisure and personal-care time for full-time employed workers, with Japan at the low end and Italy among the high end of the OECD range. Those differences are not just about GDP; they reflect norms, labor institutions, welfare arrangements, commuting systems, family policy, and expectations around work intensity. Time is socially organized. citeturn7search3turn23search0
This leads to the first major critique of the thesis. If one says “more time for my own thoughts is the ultimate privilege of wealth,” one risks implying that the wealthy simply possess more true leisure. But leisure itself can be commodified, status-driven, and colonized by productivity norms. Veblen’s account reminds us that affluent leisure may become display rather than inwardness. A modern version of the same critique appears in the literature on the digital attention economy, where platforms monetize user engagement and fragment time into tiny extractable units. In that environment, even a wealthy person’s leisure can be commercially colonized, distracted, and cognitively shallow. citeturn30search0turn28search1turn28search2
A second critique is psychological. More discretionary time is good up to a point, but it is not monotonically better. Sharif, Mogilner, and Hershfield found a negative quadratic relationship between discretionary time and subjective wellbeing: too little time harms wellbeing through stress, but too much time can also reduce wellbeing through a reduced sense of productivity or purpose. That is an empirical warning against the fantasy that contemplation is simply what happens when obligations disappear. Reflective time needs shape, meaning, or vocation. citeturn11search0turn10search4
A third critique concerns reflection itself. Research on self-reflection consistently distinguishes adaptive reflection from maladaptive rumination. Harrington and Loffredo found insight to be the strongest positive predictor of life satisfaction in their model, while rumination predicted worse psychological wellbeing. Self-distancing work by Grossmann and Kross shows that shifting perspective can improve wise reasoning about personal problems. So the privilege is not just having “time with oneself”; it is having the conditions and skills to use that time well. citeturn2search0turn27search0turn26search2
The best version of the original claim, therefore, is not romantic but structural: wealth often buys the freedom to defend mental space against necessity, interruption, and commercial capture. Whether that defense turns into contemplation, however, depends on social norms, technology, purpose, and the psychological form of one’s thinking. citeturn12search0turn20search2turn11search0
Wellbeing, creativity, and decision quality
The wellbeing literature strongly supports the view that time scarcity is consequential. Giurge, Whillans, and West summarize evidence that time poverty is linked to lower wellbeing, worse physical health, and lower productivity. In Kenya, Whillans and West showed experimentally that reducing time poverty among working mothers produced benefits, reinforcing the idea that time is itself a scarce resource with welfare value. citeturn11search4turn11search2turn10search3
One practical way wealth improves wellbeing is by freeing time. In Buying time promotes happiness, people who spent money on time-saving services reported greater life satisfaction, and in the field experiment they were happier after a time-saving purchase than after a material one. Separate work on values shows that people who prioritize time over money choose more intrinsically rewarding activities and are happier after major life transitions. Taken together, those studies suggest that wellbeing gains arise less from money itself than from using money to reclaim time for intrinsically meaningful pursuits. citeturn12search0turn35search0turn35search2
Reflection also appears to matter for decision quality. In experiments on Solomon’s paradox, people reason more wisely about others’ problems than about their own, but self-distancing eliminates much of that gap. Repeated self-distanced reflection also promotes more positive emotional change after adversity. This suggests that protected reflective time can improve judgment when it supports perspective-taking, epistemic humility, and emotional regulation. citeturn27search0turn26search2
On creativity, the evidence is promising but more qualified. A growing literature suggests that incubation and some forms of mind wandering can aid creativity, but the effects are context-dependent. Recent work shows mind wandering during incubation can improve creative performance in some settings, while other studies find benefits depend on awareness, task type, and difficulty. Reflective leisure is therefore not a uniformly productive creativity engine; its benefits depend on whether the mind is wandering freely, consciously, and under low enough stress to incubate new associations. citeturn25search2turn25search1turn25search0
There is also a hard health boundary. WHO and ILO estimate that long working hours caused 745,000 deaths from stroke and ischemic heart disease in 2016, and working 55 or more hours per week is associated with a 35% higher stroke risk and a 17% higher risk of dying from ischemic heart disease relative to working 35–40 hours. If wealth can reduce exposure to long-hours work, then the privilege of reflective time is not only existential or aesthetic; it is also biological. citeturn21search0turn21search3
A concise synthesis is this: time affluence supports flourishing most when it is autonomous, moderate in amount, psychologically skillful, and directed toward intrinsically rewarding activity. That is precisely why wealth matters. It makes those conditions easier to obtain, though never automatic. citeturn11search0turn12search0turn35search0turn27search0
Policy, practical recommendations, and research agenda
If time for thought is partly a distributive good, then policy should aim to widen access to temporal autonomy rather than treating busyness as a purely personal-management problem. The most credible policy levers are those that reduce forced time burdens or improve control over schedules. OECD policy work points especially to affordable childcare, parental-leave design, and tax-benefit systems; ILO work highlights care infrastructure and care leave; WHO and ILO support enforceable limits on excessive working hours; newer evidence on reduced-hours trials suggests shorter workweeks can improve wellbeing when pay is preserved and workflows are reorganized. citeturn34search2turn34search0turn21search0turn16search0
| Policy option | Mechanism for creating reflective time | Evidence base | Main caveat |
|---|---|---|---|
| Affordable childcare and out-of-school care | Reduces unpaid care burden, especially for mothers | OECD identifies childcare access as central to women’s labor supply and time inequality; ILO frames care deficits as major constraints on decent work and gender equality | Can expand paid work without increasing reflection unless total workloads fall too citeturn34search2turn34search0 |
| Paid parental leave with stronger father uptake | Redistributes early-child care and shapes norms around unpaid work | OECD notes gender gaps in leave use reflect policy design and norms; better father uptake can rebalance unpaid work | Poorly designed leave systems can reinforce maternal specialization citeturn34search4turn34search5 |
| Working-time limits and overtime enforcement | Reduces health-damaging long-hours work and creates minimum time protection | WHO/ILO evidence on mortality from long hours strongly supports limits | Works best with enforcement and wage protection citeturn21search0turn21search3 |
| Income-preserving shorter workweek | Converts productivity gains into discretionary time | Large multi-country 4-day-week trial shows lower burnout and better mental and physical health | Evidence strongest so far for participating organizations, often white-collar heavy citeturn16search0 |
| Schedule control and remote or hybrid work | Cuts commute and improves temporal flexibility | NBER shows large commute-time savings from WFH | Benefits are highly unequal by occupation and education citeturn14search0turn14search2 |
| Reduce administrative and waiting burdens in public services | Frees low-income people from friction time | Waiting-time inequality research shows low-income people lose more time to services | Hard to measure and politically underprioritized citeturn20search0 |
| Cash supports or guaranteed income | Gives households room to buy back time or reduce hours | RCT evidence shows leisure increases modestly when income rises | More leisure does not automatically translate into long-run wellbeing or productive reflection citeturn15search0 |
For individuals, the practical recommendations are relatively clear. If a person has any disposable income, one of the highest-return uses is often to buy back low-value time rather than buy more status goods. The research on buying time and valuing time over money supports prioritizing services, conveniences, or job choices that reduce recurring burdens and preserve hours for intrinsically rewarding activity. citeturn12search0turn35search0turn35search2
Second, reflective time should be protected, bounded, and unfragmented. The evidence on leisure fragmentation and attention commodification implies that a few uninterrupted hours can be more valuable than many scattered minutes. Reflection is most likely to become useful when it is not interrupted by platform capture, scattered errands, or constant schedule switching. citeturn29search2turn28search1turn28search2
Third, the form of reflection matters. The best-supported practices are those that promote insight rather than rumination: journaling with self-distancing, walking without media saturation, therapy, coaching, or contemplative practices that widen perspective rather than intensify self-immersion. The self-distancing literature is particularly relevant because it shows how reflective thinking can improve emotional outcomes and wiser reasoning about one’s own life. citeturn26search2turn27search0turn2search0
Fourth, one should not romanticize maximum free time. The evidence on discretionary time suggests that psychological benefits peak at moderate rather than unlimited levels and that purpose and intrinsic motivation matter. The goal is not endless idle time but enough autonomous time to think without panic. citeturn11search0turn10search4
The most important primary or official sources to prioritize for future work are listed below.
| Source to prioritize | Why it matters |
|---|---|
| OECD Time Use Database | Best harmonized cross-national official source on unpaid work, paid work, leisure, and personal care citeturn33search0 |
| OECD How’s Life? work-life balance chapter | Strong interpretive overview of time off, unpaid work, and time-use satisfaction citeturn7search3turn3search0 |
| U.S. ATUS and ATUS microdata | Best official within-country diary dataset for the United States citeturn8search6turn8search0 |
| IPUMS Time Use | Harmonized research access to ATUS, AHTUS, and MTUS for long-run and cross-national analysis citeturn22search1 |
| UN Guide to Producing Statistics on Time Use | Methodological standard for future comparative work citeturn33search1turn33search3 |
| World Bank Gender Data Portal on employment and time use | Useful for global unpaid-care indicators and development comparisons citeturn3search1 |
| WHO/ILO long-hours work estimates | High-stakes evidence on the health consequences of excessive work time citeturn21search0turn21search3 |
Several major research gaps remain. Time-use datasets rarely measure net wealth directly, making it hard to distinguish the effects of assets from those of labor income. Standard classifications also do not isolate contemplative time as a category; researchers usually infer it indirectly. Evidence on race and ethnicity is much thinner and less harmonized cross-nationally than evidence on gender. And although we have good causal evidence that money can buy back time, we still lack equally strong causal evidence on exactly which forms of recovered time most improve reflection, creativity, and decision quality over the long run. citeturn33search1turn31search4turn12search0turn27search0
The most rigorous final judgment is therefore this: “More time for my own thoughts” is not the only privilege of wealth, but it may be one of its most profound forms. Wealth often functions as a machine for converting money into time, and time into autonomy. Yet the ultimate privilege is not merely having more hours. It is having enough security, control, and protection from interruption that some of those hours can become truly one’s own. citeturn12search0turn11search4turn20search2turn29search2