Perceiving causality after the fact: postdiction in the temporal dynamics of causal perception

In simple dynamic events we can easily perceive not only motion, but also higher-level properties such as causality, as when we see one object collide with another. Several researchers have suggested that such causal perception is an automatic and stimulus-driven process, sensitive only to particular sorts of visual information, and a major research project has been to uncover the nature of these visual cues. Here, rather than investigating what information affects causal perception, we instead explore the temporal dynamics of when certain types of information are used. Surprisingly, we find that certain visual events can determine whether we perceive a collision in an ambiguous situation even when those events occur after the moment of potential 'impact' in the putative collision has already passed. This illustrates a type of postdictive perception: our conscious perception of the world is not an instantaneous moment-by-moment construction, but rather is formed by integrating information presented within short temporal windows, so that new information which is obtained can influence the immediate past in our conscious awareness. Such effects have been previously demonstrated for low-level motion phenomena, but the present results demonstrate that postdictive processes can influence higher-level event perception. These findings help to characterize not only the 'rules' of causal perception, but also the temporal dynamics of how and when those rules operate.     

Pocket-sized psychology studies: Exploring daily diary software for Palm Pilots

Daily dairies, also known as experience sampling methods (ESM) or everyday experience methods, are a common methodology utilized to provide insight into momentary psychological processes. Traditionally, such studies often have utilized paper-and-pencil surveys administered several times each day over a span of several days or weeks. However, advances in technology now allow these studies to be conducted using palmtop computers (i.e., personal digital assistants; PDAs). Three software packages for running these studies on the Palm operating system were explored and compared on a number of features. Specifically, ESP (Experience Sampling Program, by Feldman Barrett & Barrett, 2001), iESP Version 3.2 (Intel Experience Sampling Program, by Intel Research Seattle & the University of Washington Computer Science and Engineering Department), and PMAT Version 2.0 (Purdue Momentary Assessment Tool, by the Military Family Research Institute at Purdue University) were examined, with their key features compared. These advances in software for running diary studies include a number of features that provide researchers with methods and information previously unavailable in diary studies and may expand the range of possibilities in diary study designs.     

When Evening Falls: The Immigrant's Encounter with Middle and Old Age

This article elucidates the immigrant's encounter with the developmental tasks of middle and old age. It describes the vicissitudes of five psychosocial challenges characteristic of this phase of life and underscores the difficulties faced by the immigrant in each of these realms. These challenges include (1) letting go of the children, (2) retirement, (3) grandparenthood, (4) loss of siblings and peers through death, and (5) declining physical health and anticipation of death. It is suggested that preexisting capacity for mourning alongside a satisfactory marriage, support from homoethnic community, non-job-related sublimations, economic security, and absence of undue physical ailments help sustain a positive attitude as one faces these phase-specific dilemmas of late adult life.     

Culture and judgment of causal relevance

The authors hypothesized that because the causal theories of East Asians were more holistic and complex than those of Americans, the amount of information considered before making a final attribution would be larger for East Asians than for Americans. This hypothesis was supported through 4 studies. When participants attempted to explain a deviant behavior (Study 1) or a prosocial behavior (Study 2), Korean participants took into consideration a greater amount of information than did either American or Asian American participants. Study 3 replicated the findings of Studies 1 and 2 within each culture. Finally, Study 4 established a link between the present findings and past research on culture and attribution. Namely, Study 4 found that Koreans made more external attributions than Americans because Koreans considered more information than did Americans.     

Did COVID-19 really change our well-being? It's up to meaning in life: Evidence from two longitudinal studies

Since the outbreak of COVID-19, copious studies have explored whether and how COVID-19 has changed individuals' well-being. However, research has revealed mixed and inconsistent findings on this topic, with some suggesting that the pandemic hampered well-being, and others showing non-significant or even opposite patterns. Yet, little is known about what psychological factors could explain such discrepancies. The present study aims to fill this gap by proposing meaning in life (MIL) as a key moderator of the changes in well-being following the pandemic. Two studies reported here (total N = 19,828), which took within-person longitudinal approaches comparing subjective well-being (SWB; hedonic well-being) and psychological well-being (PWB; eudaimonic well-being) before and during COVID-19 (Study 1: 2018, 2019 vs. 2020, 2021; Study 2: 2019 vs. 2021), provided empirical evidence supporting our theoretical claims. Specifically, we found significant moderative effects of MIL in both studies, such that individuals who held a higher MIL amidst COVID-19 experienced an increase in SWB as well as PWB. In stark contrast, the two indicators of well-being declined over time among those who possessed a lower MIL during the pandemic. Overall, our results suggest that MIL serves as one of the significant moderators of the changes in well-being following COVID-19, which may address the previous conflicting findings in this field.     

Safety first,but for whom? Shifts in risk perception for self and others following COVID-19 vaccination

Vaccines can affect the mind as well as the body. Research on the psychological impact of vaccines has largely focused on risk-related judgments and behaviors involving the recipient. Here, we extend this work to risk-related judgments of others. In a prospective cohort study involving three samples and two timepoints (N = 588 adults), we tested competing hypotheses about the effects of receiving a COVID-19 vaccine on perceived risks to the unvaccinated: (1) a self/other differentiation hypothesis (vaccination will lead to estimation of lower risk for the self but higher risk for others) versus (2) a self/other correspondence hypothesis (vaccination will lead to estimation of lower risk from contracting COVID-19 for both self and others). Results revealed risk estimates as well as preferences for COVID-related social policies more consistent with the former hypothesis. We discuss potential psychological mechanisms and implications of these findings.     

False Consensus and False Uniqueness in Estimating the Prevalence of Health-Protective Behaviors

The degree to which people perceive that their health-relevant behaviors are also performed by their peers may influence whether they continue these practices or are susceptible to change. The present paper examined estimates of social consensus for health-relevant behaviors. It was hypothesized that respondents would perceive their own behaviors to be relatively more common than do people not performing them, the so-called False Consensus Effect. However, in terms of the accuracy of consensus estimates, people who behave in undesirable ways will tend to overestimate the actual number of others who behave similarly. In contrast, people who behave in desirable ways will underestimate the actual number of people who behave like themselves (false uniqueness). A group of college-aged males were asked to report about their performance of a series of health-relevant behaviors and to estimate the frequency of each behavior among their peers. The findings strongly supported the first two hypotheses and provided some support for the third. One practical implication of the results is that persons with unhealthy practices may resist public health campaigns and other interventions by overestimating consensus for their own behaviors. Also, individuals who think their undesirable health behaviors are relatively common may believe that they involve few health risks for them. The research suggests the need for further research on social cognitions about health, illness, and health-protective behaviors.     

Cognitive,Behavioral, and Personality Correlates of HIV-Positive Persons' Unsafe Sexual Behavior1

This study examined sexually risky behaviors of HIV-positive men and women within the framework of social cognitive theory. Condom use was found to be associated with high self-efficacy, positive influeces from social models, and specific condom use expectancies. As risky sexual behavior may be the manifestation of a more general pattern of risk taking that emerges from personality dispositions such as impulsiveness or psychoticism, this possibility was explored with discriminant analyses. Self-reported impulsivity, substance abuse, promiscuity, and deception served as markers of the presumed disposition. While these variables did not reliably distinguish between consistent and inconsistent condom users, they did enhance significantly the classification of individuals who, during the past 6 months, had been sexually abstinent, monogamous, or nonmonogamous. Those who reported more sex partners scored higher on impulsivity, disclosed more involvement with illegal drugs, and showed greater willingness to mislead potential partners about their sexual history than monogamous or sexually abstinent persons with HIV.     

Enhanced Hippocampal CA1 LTP but Normal Spatial Learning in Inositol 1,4,5-trisphosphate 3-kinase(A)-Deficient Mice

To define the physiological role of IP₃3-kinase(A) in vivo, we have generated a mouse strain with a null mutation of the IP₃3-kinase(A) locus by gene targeting. Homozygous mutant mice were fully viable, fertile, apparently normal, and did not show any morphological anomaly in brain sections. In the mutant brain, the IP₄ level was significantly decreased whereas the IP₃ level did not change, demonstrating a major role of IP₃3-kinase(A) in the generation of IP₄. Nevertheless, no significant difference was detected in the hippocampal neuronal cells of the wild-type and the mutant mice in the kinetics of Ca²⁺ regulation after glutamate stimulation. Electrophysiological analyses carried out in hippocampal slices showed that the mutation significantly enhanced the LTP in the hippocampal CA1 region, but had no effect on the LTP in dentate gyrus (DG). No difference was noted, however, between the mutant and the wild-type mice in the Morris water maze task. Our results indicate that IP₃3-kinase(A) may play an important role in the regulation of LTP in hippocampal CA1 region through the generation of IP₄, but the enhanced LTP in the hippocampal CA1 does not affect spatial learning and memory.