MSA for a special spearman matrix

Kaiser's measure of sampling adequacy is applied to a special Spearman matrix and a specialq-cluster generalization. The result supports the contention that the measure should be no less than .5 for data to be appropriate for factor analysis.The research reported in this note was supported in part by the Program in Applied Mathematics and Statistics, National Science Foundation, and by the National Institute of Education, Department of Health, Education, and Welfare.     

An Examination of Post-Traumatic Stress Symptoms and Aggression among Children with a History of Adverse Childhood Experiences

Childhood aggression is associated with many deleterious outcomes and is a common reason for psychiatric referral (Card & Little, 2006; Gurnani et al., 2016). One factor associated with childhood aggression is Adverse Childhood Experiences (ACEs; Felitti et al., 1998). However, existing research remains equivocal on which characteristics of ACEs (e.g., cumulative impact, typology, etc.) are significantly elated to aggression, especially when considering differential effects of ACEs on proactive aggression (PA) and reactive aggression (RA; Dodge & Coie, 1987). Post-traumatic stress symptoms (PTSS) are a common negative sequalae of ACEs and are characterized by disruptions in several cognitive, emotional, and behavioral processes similar to those associated with both RA and PA (e.g., Marsee, 2008). As such, the examination of PTSS as an underlying mechanism of influence on the relation between ACEs, PA, and RA is warranted. The present study fills several gaps in the literature by examining ACE characteristics that might be related to PTSS, PA, and RA while also examining direct and indirect effects on the relation between ACEs, PTSS and PA and RA. Results indicated the type of ACE, specifically child maltreatment ACEs (CM-ACEs), was most strongly related to all outcome variables. Therefore, CM-ACEs were included in a path analysis with PTSS, PA, and RA. Results indicated a significant indirect effect for PTSS on the relation between CM-ACEs and RA (β?=?.18, p?<?.01) but not PA. Findings have several implications for future research and clinical practice, especially for children with an extensive history of CM-ACEs.

     

Assessing students' use of optional online lecture reviews

Online practice quizzes can be used to supplement instruction in the classroom. Such quizzes can engage retrieval practice, thereby improving learning and retention. However, despite their potential benefits, recent work suggests that students typically underutilize online practice quizzes. This article reports an observational classroom study, in which students were provided optional online reviews throughout the semester. The reviews could be accessed in test format, in which students were given multiple-choice questions and provided correct answer feedback, or in read format in which students were given the same questions and were shown the correct answers. Students who used the test format performed better on exams than students who used the read format or did not use the reviews. Nevertheless, the massive majority of the online reviews (approximately 88%) were not completed, highlighting the tendency for students to underutilize optional online reviews.     

Muslims’ emotions toward Americans predict support for Hezbollah and Al Qaeda for threat-specific reasons

Using a random sample of 243 Muslims in Lebanon and Syria, we examined whether support for Hezbollah or for Al Qaeda is predicted by functionally-relevant emotional responses to specific threats perceived to be posed by Americans. In line with the sociofunctional approach, perceived resource domination threat from Americans elicited anger, and perceived value contamination threat elicited disgust/contempt toward Americans. Importantly, these intergroup emotions in turn differentially predicted support for Hezbollah and Al Qaeda through desires for the organizations to accomplish different goals to address the threat perceptions. Specifically, anger toward Americans predicted support for Hezbollah through desires for the organization to restore threatened symbolic resources by bringing pride and respect to Arabs. In contrast, disgust/contempt toward Americans predicted support for Al Qaeda through desires for the organization to protect threatened ingroup values by de-contaminating Islam from Western cultural influence. Theoretical explanations and implications for addressing and mitigating hostilities between the groups are discussed.     

Are pictures good for learning new vocabulary in a foreign language? Only if you think they are not

The current study explored whether new words in a foreign language are learned better from pictures than from native language translations. In both between-subjects and within-subject designs, Swahili words were not learned better from pictures than from English translations (Experiments 1-3). Judgments of learning revealed that participants exhibited greater overconfidence in their ability to recall a Swahili word from a picture than from a translation (Experiments 2-3), and Swahili words were also considered easier to process when paired with pictures rather than translations (Experiment 4). When this overconfidence bias was eliminated through retrieval practice (Experiment 2) and instructions warning participants to not be overconfident (Experiment 3), Swahili words were learned better from pictures than from translations. It appears, therefore, that pictures can facilitate learning of foreign language vocabulary--as long as participants are not too overconfident in the power of a picture to help them learn a new word.     

Social Identity and Personal Identity Stereotype Threat: The Case of Affirmative Action

Integrating insights from research examining the effect of being seen through the lens of stereotypes on academic performance and the social identity perspective, we examine the effect of perceived affirmative action admission at college entry on academic performance at the end of the first year. We propose that stereotype threat plays a crucial moderating role in determining when performance is affected. A longitudinal study of Black and Latino students at a large multiethnic university showed that perceptions of affirmative action admission negatively affected achievement among high stereotype-threatened individuals but not among low stereotype-threatened individuals. Furthermore, the results show that stereotype threat can have its effects because of concerns for the self (personal identity stereotype threat) or because of concerns for the group (social identity stereotype threat). As expected, social identity stereotype threat negatively affected the performance of individuals high in ethnic identification, whereas personal identity stereotype threat negatively affected the performance of individuals low in ethnic identification.     

Using prequestions to enhance learning from reading passages: the roles of question type and structure building ability

ABSTRACT

Answering questions before learning something (“prequestions”) enhances learning. However, these benefits usually occur for information that was asked in the prequestions (i.e. prequestioned material), and not for non-prequestioned material. We reasoned that this narrow benefit may be due to the fact that studies typically use fairly simple prequestions that have a clear answer within one part of the learning material – isolative prequestions. We explored the effects of integrative prequestions that required participants to make connections across different parts of a reading passage. Experiment 1 showed the usual benefit of isolative prequestions on prequestioned but not on non-prequestioned material, but no benefit of integrative prequestions. However, in Experiment 2 when participants were given instructions to seek the answers while reading, integrative prequestions benefited learning of both prequestioned and non-prequestioned material. Individual differences in structure building positively predicted performance, but did not interact with the effects of prequestions.     

Social dominance theory and the dynamics of intergroup relations: Taking stock and looking forward

This chapter reviews the last 15 years of research inspired by social dominance theory, a general theory of societal group-based inequality. In doing so, we sketch the broad outlines of the theory and discuss some of the controversies surrounding it, such as the “invariance hypothesis” regarding gender differences in social dominance orientation (SDO) and the effect of social context on the expression of SDO. We also discuss the central role of gender in the construction and maintenance of group-based inequality, and review some of the new research inspired by the social dominance perspective. Finally, we identify and discuss some of the most important theoretical questions posed by social dominance theory that are yet to be researched.