Analysis of categorical moderators in mixed‐effects meta‐analysis: Consequences of using pooled versus separate estimates of the residual between‐studies variances

Subgroup analyses allow us to examine the influence of a categorical moderator on the effect size in meta‐analysis. We conducted a simulation study using a dichotomous moderator, and compared the impact of pooled versus separate estimates of the residual between‐studies variance on the statistical performance of the Q _{B (P)} and Q _{B (S)} tests for subgroup analyses assuming a mixed‐effects model. Our results suggested that similar performance can be expected as long as there are at least 20 studies and these are approximately balanced across categories. Conversely, when subgroups were unbalanced, the practical consequences of having heterogeneous residual between‐studies variances were more evident, with both tests leading to the wrong statistical conclusion more often than in the conditions with balanced subgroups. A pooled estimate should be preferred for most scenarios, unless the residual between‐studies variances are clearly different and there are enough studies in each category to obtain precise separate estimates.     

Who Knows? Knowledge Activation,Belief in Certainty of Knowledge,Maximization Tendencies and Need for Cognition in Answerability Judgments

In this study, investigating answerability judgments, 123 participants judged whether each of 46 general knowledge questions could currently be answered by themselves, by someone else, or by no one. There were 26 consensus questions (high expected consensus about their answerability) and 20 non-consensus questions. Before each question, half of the participants rated the extent of their knowledge related to the question. Results showed that answering consensus questions compared with non-consensus led to a lower proportion of “No one knows” answers. Moreover, in the knowledge rating condition compared with the control condition, participants choose “No one knows” proportionally less. Participants’ ratings of belief in certainty of knowledge were associated with more “Someone else knows” for the non-consensus questions. Moreover, tendency to maximization led to a higher proportion of “Someone else knows” options for the non-consensus questions. Finally, high need for cognition was associated with fewer choices of “Someone else knows.”     

Slowing Down Time: An Exploration of Personal Life Extension Desirability as it Relates to Religiosity and Specific Religious Beliefs

As medical technology continues increasing the possibility of living a longer life, the public’s valuing of these developments must be considered. This study examines attitudes toward extending the human life span within a student population at a Christian university. Religious factors were hypothesized to affect life extension desirability. Scores on measures of willingness to defer to God’s will, meaning derived from religion, positive afterlife beliefs, and intrinsic religiosity were significantly and inversely related to life extension desirability. Implications of these findings are discussed, including encouraging medical practitioners to respect decision-making processes of religious persons who may find life extension interventions undesirable.     

Psychometric Properties and Normative Data of the Zuckerman–Kuhlman Personality Questionnaire in a Psychiatric Outpatient Sample

The Zuckerman–Kuhlman Personality Questionnaire (ZKPQ; Zuckerman, Kuhlman, Joireman, Teta, &; Kraft, 1993 Zuckerman, M., Kuhlman, D. M., Joireman, J., Teta, P., &; Kraft, M. (1993). A comparison of three structural models for personality: The big three, the big five, and the alternative five. Journal of Personality and Social Psychology, 65, 757–768. doi:10.1037/0022-3514.65.4.757[Crossref], [Web of Science ®] , [Google Scholar]) was designed for the assessment of personality. The goal of this work was to determine the psychometric properties of the ZKPQ, as well as to establish normative data by gender and age in an outpatient sample attending primary mental health care services. We administered the questionnaire to 314 participants (34.7% males) 18 to 81 years old. The most prevalent primary diagnoses were mood (37.9%) and adjustment disorders (35.0%). Concerning the psychometric properties of the ZKPQ, the pattern of internal consistencies was similar to that previously found among general population, student, or clinical samples. Regarding gender differences, a general pattern was found, with women scoring higher on neuroticism and sociability, and lower on aggression-hostility. As for age, in general, scores declined with age. Norm-based decision making has the potential for significant and long-lasting consequences, and the quality of decisions based on score comparisons can be improved when scores are compared to norms fitted to the group of reference. The availability of the ZKPQ norms by gender and age in mental health care will benefit the accuracy of assessment and therapeutic decision making, providing more effective treatment planning overall.     

Status Incongruence and Supervisor Gender as Moderators of the Transformational Leadership to Subordinate Affective Organizational Commitment Relationship

Grounded in role congruity theory, we examine how status incongruence (when the subordinate is older, has more education, work experience, and/or organizational tenure than the supervisor) in subordinate–supervisor dyads affects transformational leaders’ ability to foster affective organizational commitment among their subordinates. Across two field studies, our findings show that the relationship between transformational leadership and subordinate affective organizational commitment is less positive when status incongruence is high. Furthermore, in both field studies we found a 3‐way interaction among transformational leadership, status incongruence, and supervisor gender predicting subordinate affective organizational commitment. Specifically, in Study 1 (pink‐collar employees in Turkey), low status incongruence strengthened the positive relationship between transformational leadership and subordinate affective organizational commitment for male leaders. In Study 2 (pink‐collar employees in the United States), low status incongruence strengthened the positive relationship between transformational leadership and subordinate affective organizational commitment for female leaders. Furthermore, Study 2 also revealed that collective identity was a mediator of both the significant 2‐ and 3‐way interaction effects on subordinate affective organizational commitment.     

Shoemaker's Analysis of Realization: A Review

Sydney Shoemaker has been arguing for more than a decade for an account of the mind–body problem in which the notion of realization takes centre stage. His aim is to provide a notion of realization that is consistent with the multiple realizability of mental properties or events, and which explains: (i) how the physical grounds the mental; and (ii) why the causal work of mental events is not screened off by that of physical events. Shoemaker's proposal consists of individuating properties in terms of causal powers, and defining realization as a relation of inclusion between sets of causal powers. Thus, as the causal powers that define a mental property are a subset of the causal powers that characterize a physical property, it can be said that physical properties realize mental properties. In this paper we examine the physicalist credentials of Shoemaker's mind–body theory in relation to three important issues: the direction of the relation of dependence that the theory is committed to; the possibility of mental properties existing without being anchored by physical properties; and the compatibility of the theory with the causal closure of the physical world. We argue that Shoemaker's theory is problematic in all three respects. After that we consider whether the theory should count as a mind–body theory at all, given that it seems to be committed to a distorted view of mental properties.     

Do Critical Thinkers Drink Too Much Alcohol,Forget to Do Class Assignments,or Cheat on Exams? Using a Critical Thinking Measure to Predict College Students’ Real-World Outcomes

Critical thinking is a higher-order way of reasoning composed of the skill and will to use cognitive abilities and knowledge on a daily basis. It is identified as essential by higher education institutions, corporations, and society in general. To analyze whether college students are critical thinkers in their daily lives, the Halpern Critical Thinking Assessment (HCTA; Halpern in Halpern Critical Thinking Assessment (Measurement instrument), Schuhfried, Mödling, 2012) and the real-world outcomes inventory (RWO; Butler in Appl Cogn Psychol 26(5):721–729, 2012) were administered to 238 students. We performed a cluster analysis (K-means-constrained clustering method), and ANOVAs for each cluster solution tested to identify the most suitable clustering solution, taking the RWO inventory dimensions as dependent variables and cluster membership as an independent variable. Four separate clusters emerged, each representing a different profile related to students’ everyday negative outcomes resulting from a lack of critical thinking. We performed multinomial logistic regression to examine which dimensions of the HCTA test, as well as gender, age, and disciplinary area, predicted the four singular groups of students that emerged: “Mature,” “Risk-taking,” “Lost in translation,” and “Reflective.” Results indicate that: (1) age is a relevant predictor of slackness, rashness, and health neglect, all characteristics of “Mature” students; (2) students who are particularly skilled in hypothesis testing tend to be “Risk-taking,” while it is less likely that students who are specifically competent in argument analysis will be in this group; (3) gender is relevant to predict “Lost in translation” students, while argument analysis is negatively related to the chances of being in this group. Our study supports the relevance of critical thinking in daily decisions and everyday outcomes.     

Self‐control depletion impairs goal maintenance: A meta‐analysis

Initial exertion of self‐control has been suggested to impair subsequent self‐regulatory performance. The specific cognitive processes that underlie this ego depletion effect have rarely been examined. Drawing on the dual‐process theory of executive control (Engle & Kane, 2004 ; Kane & Engle, 2003 ), the current meta‐analysis revealed that initial self‐control exertion impairs participants’ capacities of maintaining the task goal but its effect on capacities of resolving response competition is in need of further investigation. Our results are more consistent with recent theoretical views that consider ego depletion as a switch cost and a result arising from reduced motivation to engage in further self‐control.