Genetic and environmental influences on individual differences in printed word recognition

The genetic and environmental etiologies of individual differences in printed word recognition and related skills were explored in 440 identical and fraternal twin pairs between 8 and 18 years of age. A theoretically driven measurement model identified five latent variables: IQ, phoneme awareness, word recognition, phonological decoding, and orthographic coding. Cholesky decomposition models on these five latent constructs revealed the existence of both common and independent genetic effects, as well as non-shared environmental influences. There was evidence for moderate genetic influences common between IQ, phoneme awareness, and word-reading skills, and for stronger IQ-independent genetic influences that were common between phoneme awareness and word-reading skills, particularly phonological decoding. Phonological and orthographic coding skills in word recognition had both significant common and significant independent genetic influences, with implications for "dual-route" and "connectionist" reading models, subtypes of reading disabilities, and the remediation of reading disabilities.     

Reducing the influence of extrapersonal associations on the Implicit Association Test: personalizing the IAT

The authors argue that the Implicit Association Test (IAT; A.G. Greenwald, D.E. McGhee, & J.L.K. Schwartz, 1998) can be contaminated by associations that do not contribute to one's evaluation of an attitude object and thus do not become activated when one encounters the object but that are nevertheless available in memory. The authors propose a variant of the IAT that reduces the contamination of these "extrapersonal associations." Consistent with the notion that the traditional version of the IAT is affected by society's negative portrayal of minority groups, the "personalized" IAT revealed relatively less racial prejudice among Whites in Experiments 1 and 2. In Experiments 3 and 4, the personalized IAT correlated more strongly with explicit measures of attitudes and behavioral intentions than did the traditional IAT. The feasibility of disentangling personal and extrapersonal associations is discussed.     

Perceptual grouping in change detection

Detection of an item's changing of its location from one instance to another is typically unaffected by changes in the shape or color of contextual items. However, we demonstrate here that such location change detection is severely impaired if the elongated axes of contextual items change orientation, even though individual locations remain constant and even though the orientation was irrelevant to the task. Changing the orientations of the elongated stimuli altered the perceptual organization of the display, which had an important influence on change detection. In detecting location changes, subjects were unable to ignore changes in orientation unless additional, invariant grouping cues were provided or unless the items changing orientation could be actively ignored using feature-based attention (color cues). Our results suggest that some relational grouping cues are represented in change detection even when they are task irrelevant.     

Effects of phonological length on the attentional blink for words

The authors tested whether the attentional blink (AB), a deficit in the ability to report a second target appearing within half a second of a first target, may reflect limitations for consolidating visual stimuli into working memory and awareness. Previous research has shown that people are severely limited in the rate that they can identify and report visual events presented in rapid succession. Word length was examined, a variable known to affect verbal working memory. Experiment 1 showed that the AB was modulated by the phonological length of the first target. Phonologically longer pseudowords triggered larger blink deficits. Experiment 2 also demonstrated the word-length effect on the AB using real-world stimuli, anagrams, that controlled for low-level visual differences between conditions. These data support proposals that the AB reflects a difficulty in consolidating information into working memory.     

Temporal contextual cuing of visual attention

Previous research has shown how spatial attention is guided to a target location, but little is understood about how attention is allocated to an event in time. The authors introduce a paradigm to manipulate the sequential structure of visual events independent of responses. They asked whether this temporal context could be implicitly learned and used to guide attention to a relative point in time or location, or both, in space. Experiments show that sequentially structured event durations, event identities, and spatiotemporal event sequences can guide attention to a point in time as well as to a target event's identity and location. Cuing was found to rely heavily on the element immediately preceding the target, although cuing from earlier items also was evident. Learning was implicit in all cases. These results show that the sequential structure of the visual world plays an important role in guiding visual attention to target events.     

A Path to More Enduring Happiness: Take a Detour from Specific Emotional Goals

Although much of consumption behavior is prompted by the pursuit of happiness, enduring happiness remains elusive, since happiness is destined to adaptation. Our research identifies a novel yet simple method of slowing hedonic adaptation from consumption activities: reducing specificity of the happiness goal. We propose that in the realm of happiness, contrary to findings from other domains, having a general (e.g., feeling good) versus a specific (e.g., excitement) emotional goal might hold the key to more enduring happiness. One lab experiment and a longitudinal study demonstrate general (vs. specific) goals expand the breadth of emotions experienced from consumption activities, which in turn impact the top‐of‐mind awareness of the consumption target over time; higher top‐of‐mind awareness of the target allows one to continue to derive happiness from it. Importantly, the happiness advantage of general emotional goals strengthens over time. Given a significant tendency by consumers to pursue specific happiness goals (as three pilot studies reveal), a simple change in the way they formulate their happiness goals could be consequential for consumer wellbeing.     

Gene-Environment Interactions in ADHD: The Roles of SES and Chaos

Although attention-deficit/hyperactivity disorder (ADHD) is highly heritable, emerging evidence suggests symptoms are associated with interactions between genes and the environment (GxE) during development. This study tested whether heritability of ADHD symptoms is moderated by two environmental factors: socioeconomic status (SES) and chaos (household disorganisation). A population sample of 520 twin pairs (N = 1040, 52.3% female) from 6 to 15 years completed measures of behavior and home environment. Structural equation modelling was then used to test whether environmental factors were associated with a change in the extent to which genes explain variability in ADHD symptoms. Neither chaos nor SES moderated heritability, with consistent contributions from both genes and environment indicated across socioeconomic strata and levels of chaos. This finding contrasts with those of previous research, underlining the need to replicate results in the emerging field of GxE research across different populations and statistical methods. Robust findings may assist in developing targeted interventions for genetically vulnerable individuals.     

Loss Through Betrayal: An Analysis of Social Provision Changes and Psychological Reactions

Results of two retrospective studies suggested that romantic betrayal led to the loss of key aspects of social support from partners, most notably attachment, guidance, and reliable alliance with the partner. Furthermore, specific social provision losses were found to reliably predict recalled and current negative psychological states associated with romantic betrayal. Perceived attachment losses predicted postbetrayal anger and disgust, as well as trauma reactions following betrayal. In addition, a decline in reassurance of one’s worth following betrayal predicted embarrassment about the event, and the degree to which reliable alliance with the partner was lost predicted anxiety and shame.     

The Zombies Among Us

Philosophers disagree about whether there could be “zombies”: beings physically identical to normal human people but lacking consciousness. Establishing their possibility would refute physicalism. But it is seldom noted that the popular “constitution view” of human people implies that our bodies actually are zombies. This would contradict several widely held views in the philosophy of mind.     

Local Religious Subcultures and Generalized Social Trust in the United States

Using multilevel analyses of 21,193 General Social Survey respondents nested within 256 metropolitan areas and counties, we find that individuals’ willingness to trust others is strongly related to the denominational make‐up of geographic areas. The percent of evangelical Protestants in the population negatively predicts individual‐level generalized trust, while percent mainline Protestant and percent Catholic positively predict trust. The effect sizes of these results are large and robust to statistical controls, and they hold even among nonmembers of the religious groups; for instance, “percent evangelical” predicts lower trust even among nonevangelicals. Black Protestant population share initially appears to predict lower trust, but the association disappears after adjusting for racial residential segregation. Following a longstanding theoretical tradition in the sociology of religion, we argue that the religious characteristics of places—not just individuals—shape local subcultures in ways that affect a broad range of behaviors, attitudes, and values such as generalized trust.