Psychological Science最新文献

Most work on working memory development has children remember a set of items as well as they can. However, this approach sidesteps the extended mind, the integration of external information with memory. Indeed, adults prefer to use external resources (e.g., lists, models) but will remember more as the cost to access them increases. Here, in our shopping game, we investigated this trade-off in 5- to 8-year-olds. Using a touchscreen, children shopped in a virtual store. Their shopping list and the store were not visible simultaneously but could be toggled. We manipulated access cost by varying a delay (0-4 s) before the list's reappearance. Across three preregistered experiments at two sites (the United States and China, N = 141), a pattern emerged: When it was costlier to do so, children revisited the list less often, studied it longer, and selected more correct items. Also, children recognized the costs, identifying the no-delay condition as easier. Young children showed a cost-dependent trade-off of external-resource use versus working memory.

Humanity spends an increasing proportion of its time interacting online, yet-given the importance of social media to human welfare-the external factors that regularly shape online behavior remain markedly understudied. Do environmental factors alter rates of online social activity? We conducted two large natural experiments to investigate how worse weather conditions affect social-media use in the United States, analyzing over 3.5 billion posts from Facebook and Twitter (now X) between 2009 and 2016. We found that extreme temperatures and added precipitation each independently amplified social-media activity, effects that persisted within individuals. Compounded weather extremes produced markedly larger increases in social-media activity. Days colder than -5 °C with 1.5 to 2 cm of precipitation elevated social-media activity by 35%, nearly triple the surge seen on New Year's Eve in New York City. Our study highlights that environmental conditions play a critical-but overlooked-role in shaping digital social interaction.

What does it take to become an adult in Africa? Life-span-development literature includes little exploration on this transition outside Western countries. A qualitative approach was used to identify locally relevant topics and variables in an understudied African context. Fifty 18- to 25-year-old Ovambo Namibians from rural and urban areas were interviewed. Results of reflexive thematic analysis suggest the significance of gender and birth order in defining adult roles and the completion of one's education as a new rite of passage. Full adult personhood means providing for and engaging with a larger community as well as one's children and extended family, reflecting the ongoing relevance of African communalism in today's society. Youth in Namibia, and likely in sub-Saharan Africa more broadly, balance traditional and contemporary demands as they come of age in a postindependence, globalizing society. Our findings reflect the centrality of community and the intermingled nature of agentic and communal values in this process.

Being romantically partnered is widely seen as a societal norm, and it has been shown to be positively associated with important life outcomes, such as physical and mental health. However, the percentage of singles is steadily increasing, with more people staying single for life. We used the Survey of Health, Ageing and Retirement in Europe (SHARE; N = 77,064, mainly ≥ 50 years, 27 countries) to investigate Big Five personality traits and life satisfaction in lifelong singles compared with ever-partnered individuals. Specification-curve analyses suggested that lifelong singles were less extraverted, less conscientious, less open to experiences (dependent on singlehood definition), and less satisfied with their lives. Effects were stronger for never-partnered than for never-cohabitating or never-married individuals and were partly moderated by gender, age, country-level singlehood, and gender ratio. Our study provides insights into the characteristics of lifelong singles and has implications for understanding mental health and structures of social support in older individuals.

Even if the scene before our eyes remains static for some time, we might explore it differently compared with how we examine static images, which are commonly used in studies on visual attention. Here we show experimentally that the top-down expectation of changes in natural scenes causes clearly distinguishable gaze behavior for visually identical scenes. We present free-viewing eye-tracking data of 20 healthy adults on a new video dataset of natural scenes, each mapped for its potential for change (PfC) in independent ratings. Observers looking at frozen videos looked significantly more often at the parts of the scene with a high PfC compared with static images, with substantially higher interobserver coherence. This viewing difference peaked right before a potential movement onset. Established concepts like object animacy or salience alone could not explain this finding. Images thus conceal experience-based expectations that affect gaze behavior in the potentially dynamic real world.

Mental health and well-being tend to improve with age, and personality differences affect these trajectories. Although it is well established that dispositional traits, such as extraversion and neuroticism, relate to well-being, the incremental validity of other important personality constructs, such as narrative identity, remains unknown. Across 9 years, 157 late-midlife adults (M_age = 56.4 years, SD = 0.96) self-reported their well-being and symptoms of depression each year and wrote an annual narrative account describing their greatest life challenge (N_challenges = 1,211). The narrative accounts were content-coded for themes of agency and communion. Results showed that themes of agency and communion in narrative identity were significantly and uniquely associated with well-being and depression across time, over and above the effects of traits. The benefits of considering both narrative identity and dispositional personality traits as they jointly apply to mental health are discussed.

The aim of this research was to test an informational explanation of the effects observed in the affect misattribution procedure (AMP). According to this explanation, participants performing the AMP would simplify the task by asking whether the target is pleasant (yes vs. no) and would use the affective information provided by the prime to answer the question (positive = yes, negative = no). In line with this proposition, we observed in three preregistered experiments that slightly modifying the response options proposed in the task moderated the effect, which can be canceled (Experiment 1) and even reversed (Experiments 2 and 3). These results are consistent with the informational explanation and seem difficult to explain by the operation of misattribution processes.

How do children learn what a word means when its uses are consistent with many possible meanings? One influential idea is that children rely on an inductive bias that ensures that novel words get assigned distinct meanings from known words-mutual exclusivity. Here, we explore the possibility that mutual-exclusivity phenomena do not reflect a bias but rather information encoded in the message. Learners might effectively be told when (and when not) to assume that word meanings are mutually exclusive. In three experiments (N = 106 from across the United States; ages 2 years, 0 months-2 years, 11 months), we show that 2-year-olds only assumed that novel words have distinct meanings if the words were spoken with focus, an information-structural marker of contrast. Without focus, we found no mutual exclusivity; novel words were understood to label familiar objects. These results provide a novel account of mutual exclusivity and demonstrate an early emerging understanding of focus and information structure.

In light of popular accounts in the United States of "mansplaining," we investigated the effects on women when others give them "unresponsive" advice (i.e., unsolicited, generic, and prescriptive recommendations). We show using both vignettes (Study 1) and live interactions (Study 2) that unresponsive advice (vs. responsive questions) from men negatively affected women's self-perceptions, leaving them feeling less respected, powerful, and trusting and having a smaller size of self. The advice giver's gender did not moderate these self-perception outcomes (Study 3), although women anticipated greater stereotype threat only when men, and not when women, gave them unresponsive advice. Similar effects were found using responsive advice instead of questions as the comparison condition (Study 4). Overall, these findings (N = 4,394 U.S. adult women) suggest that it is the unresponsive nature of advice-and for certain outcomes the advice giver's gender-that explain its effects on women. They point to the value of a responsive suggestion or question during conversations, particularly during cross-gender ones.

How does informal care affect caregivers' well-being? Theories and existing research provide conflicting answers to this question, partly because the temporal processes and conditions under which different aspects of well-being are affected are unknown. Here, we used longitudinal data from Dutch, German, and Australian representative panels (281,884 observations, 28,663 caregivers) to examine theoretically derived hypotheses about changes in caregivers' life satisfaction, affective experiences, depression/anxiety, and loneliness. Overall, results provided evidence for negative well-being effects after the transition into a caregiver role, with more pronounced and longer-lasting well-being losses in women than in men. We further found that well-being losses were larger with more time spent on caregiving, in both men and women. These results were robust across moderators of the caregiving context (care tasks, relationship with care recipient, and full-time employment). Together, the present findings support predictions of stress theory and highlight lingering questions in theoretical frameworks of care-related well-being costs.