Fluid intelligence, working memory and executive functioning

The causes underlying the correlation between working memory and fluid intelligence remain unknown. There are some researchers who argue that the answer can be found on the presumed executive component of working memory. However, the available empirical evidence is far from conclusive. The present study tested a sample of 229 participants. Intelligence, working memory, and executive functioning were measured by one analytic reasoning test (TRASI), a dual task combining a primary task of deductive reasoning with a secondary task of counting, and the Tower of Hanoi task, respectively. All the 3 measures were computer administered. The results indicate that the shared variance between executive functioning and working memory do not account for the relationship between intelligence and working memory. Some theoretical implications are discussed.     

Don't ask,don't tell? Does disclosure of gay identity affect partner performance?

Supporters of policies that force gay and lesbian individuals to conceal their sexual orientation in the workplace argue that working with openly gay individuals undermines performance. We examine this claim in two studies and find the opposite effect. Specifically, participants working with openly gay partners performed better on a cognitive task (i.e., a math test) and a sensory-motor task (i.e., a Wii shooting game) than individuals left to wonder about the sexual orientation of their partners. These results suggest that policies, such as “Don't Ask, Don't Tell,” that introduce uncertainty into social interactions harm rather than protect performance.     

The Role of Emotion in Parent-Child Relationships: Children’s Emotionality,Maternal Meta-Emotion,and Children’s Attachment Security

This study was intended to examine the relationship among children’s emotionality, parental meta-emotion, and parent–child attachment. The sample consisted of 546 5th and 6th grade children and their mothers. The test instruments used in this study were the Emotionality subscale of the EAS Temperament Survey (mothers’ ratings only), the Parental Meta-Emotion Survey (mothers’ ratings only) and the Attachment Security Scale (children’s ratings only). Our results showed that maternal meta-emotion (emotion coaching plus emotion dismissing) was associated with children’s attachment security vis-à-vis their mothers. Mothers who tended to adopt an emotion-coaching philosophy were more likely to achieve secure parent–child attachments, as reported by their children. Children whose mothers tended to adopt an emotion-dismissing philosophy reported lower levels of attachment security. There were no direct or indirect effects of children’s emotionality on their attachment security. Parental meta-emotion, but not children’s emotionality, was significantly associated with children’s attachment security. The results indicate the importance of parenting factors in determining the parent–child relationship. Parental education programs that focus on parental attitudes and practices related to emotion should be advocated.     

Racial/ethnic differences in the influence of cultural values, alcohol resistance self-efficacy, and alcohol expectancies on risk for alcohol initiation

Prior research has reported racial/ethnic differences in the early initiation of alcohol use, suggesting that cultural values that are central to specific racial/ethnic groups may be influencing these differences. This 1-year longitudinal study examines associations between two types of cultural values, parental respect (honor for one's parents) and familism (connectedness with family), both measured at baseline, and subsequent alcohol initiation in a sample of 6,054 (approximately 49% male, 57% Hispanic, 22% Asian, 18% non-Hispanic White, and 4% non-Hispanic Black) middle school students in Southern California. We tested whether the associations of cultural values with alcohol initiation could be explained by baseline measures of alcohol resistance self-efficacy (RSE) and alcohol expectancies. We also explored whether these pathways differed by race/ethnicity. In the full sample, adolescents with higher parental respect were less likely to initiate alcohol use, an association that was partially explained by higher RSE and fewer positive alcohol expectancies. Familism was not significantly related to alcohol initiation. Comparing racial/ethnic groups, higher parental respect was protective against alcohol initiation for Whites and Asians, but not Blacks or Hispanics. There were no racial/ethnic differences in the association between familism and alcohol initiation. Results suggest that cultural values are important factors in the decision to use alcohol and these values appear to operate in part, by influencing alcohol positive expectancies and RSE. Interventions that focus on maintaining strong cultural values and building strong bonds between adolescents and their families may help reduce the risk of alcohol initiation. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Adaptive n-back training does not improve fluid intelligence at the construct level: Gains on individual tests suggest that training may enhance visuospatial processing

Short-term adaptive cognitive training based on the n-back task is reported to increase scores on individual ability tests, but the key question of whether such increases generalize to the intelligence construct is not clear. Here we evaluate fluid/abstract intelligence (Gf), crystallized/verbal intelligence (Gc), working memory capacity (WMC), and attention control (ATT) using diverse measures, with equivalent versions, for estimating any changes at the construct level after training. Beginning with a sample of 169 participants, two groups of twenty-eight women each were selected and matched for their general cognitive ability scores and demographic variables. Under strict supervision in the laboratory, the training group completed an intensive adaptive training program based on the n-back task (visual, auditory, and dual versions) across twenty-four sessions distributed over twelve weeks. Results showed that this group had the expected systematic improvements in n-back performance over time; this performance systematically correlated across sessions with Gf, Gc, and WMC, but not with ATT. However, the main finding showed no significant changes in the assessed psychological constructs for the training group as compared with the control group. Nevertheless, post-hoc analyses suggested that specific tests and tasks tapping visuospatial processing might be sensitive to training.     

Improvement in working memory is not related to increased intelligence scores

The acknowledged high relationship between working memory and intelligence suggests common underlying cognitive mechanisms and, perhaps, shared biological substrates. If this is the case, improvement in working memory by repeated exposure to challenging span tasks might be reflected in increased intelligence scores. Here we report a study in which 288 university undergraduates completed the odd numbered items of four intelligence tests on time 1 and the even numbered items of the same tests one month later (time 2). In between, 173 participants completed three sessions, separated by exactly one week, comprising verbal, numerical, and spatial short-term memory (STM) and working memory (WMC) tasks imposing high processing demands (STM–WMC group). 115 participants also completed three sessions, separated by exactly one week, but comprising verbal, numerical, and spatial simple speed tasks (processing speed, PS, and attention, ATT) with very low processing demands (PS-ATT group). The main finding reveals increased scores from the pre-test to the post-test intelligence session (more than half a standard deviation on average). However, there was no differential improvement on intelligence between the STM-WMC and PS-ATT groups.     

Solution strategies as possible explanations of individual and sex differences in a dynamic spatial task

When individuals perform spatial tasks, individual differences emerge in accuracy and speed as well as in the response patterns used to cope with the task. The purpose of this study is to identify, through empirical criteria, the different response patterns or strategies used by individuals when performing the dynamic spatial task presented in the Spatial Orientation Dynamic Test-Revised (SODT-R). Results show that participants can be classified according to their response patterns. Three different ways of solving a task are described, and their relation to (a) performance factors (response latency, response frequency, and invested time) and (b) ability tests (analytical reasoning, verbal reasoning, and spatial estimation) are investigated. Sex differences in response patterns and performance are also analyzed. It is found that the frequency with which men and women employ each one of the strategies described here, is different and statistically significant. Thus, employed strategy plays an important role when interpreting sex differences on dynamic spatial tasks.     

Extroversion Personality,Domain Knowledge,and the Creativity of New Product Development Engineers

Creativity refers to a person’s thinking of new and useful ideas at work. Drawing on the personality literature, this study proposes that employees with high extroversion personality will exchange job relevant information with colleagues to generate creativity. Drawing on the information exchange theory, this study further proposes that the effect of extroversion personality with creativity via information exchange will be stronger for workers with insufficient domain knowledge. Data collected from Taiwanese new product development engineers support our hypotheses. Previous research found that extroverted persons perform more creatively because they are more confident in their abilities. This study further demonstrates that, after controlling for self-efficacy, extroverted engineers can still think of creative ideas via exchanging information with colleagues. Although domain knowledge has been shown as crucial to creativity, few studies have explored how to stimulate creative ideas from workers with insufficient domain knowledge. This study demonstrates a useful substitute for domain knowledge, namely the extroversion personality, which may inspire creativity via exchanging information with colleagues.