Defensive and offensive behaviours in a Kleefstra syndrome mouse model

Animal Cognition - Kleefstra syndrome in humans is characterized by a general delay in development, intellectual disability and autistic features. The mouse model of this disease (Ehmt1±)...     

DIVISION OF HOUSEHOLD LABOR, STRAIN, AND DEPRESSIVE SYMPTOMS AMONG MEXICAN AMERICANS AND NON-HISPANIC WHITES

This article presents preliminary tests of the hypothesis that household labor serves as a source of strain and is indirectly associated with depressive symptoms. It also examines associations of gender and Mexican-American ethnicity with housework, household strain, and depressed mood. Respondents are 668 Mexican Americans and 394 non-Hispanic whites. Because respondents are randomly selected community residents and are married, average strain and depressive symptom levels are low. Results are consistent with the hypothesis that housework affects depressed mood indirectly, through household strain. Among women, housework is associated with an increased likelihood of household strain, which, in turn, is associated with depressive symptoms. Among men, housework is unrelated to household strain, but household strain is associated with depressed mood. Although ethnicity and gender are associated with household division of labor, with more traditional patterns among Mexican Americans, ethnicity does not modify associations among housework, household strain, and depressive symptoms.     

Emergent conditional discrimination in children: Matching to compound stimuli

This study reports two experiments that first taught preschool children identity-matching to compound sample and compound comparison stimuli. A compound stimulus consisted of a colour and a form superimposed on one another. Test sessions assessed whether children related the form and colour elements of a particular compound stimulus. The test for this was matching to sample in which an arbitrary conditional discrimination was required. A majority of the children selected the correct colour comparison in the presence of each form sample. The children also showed the reverse sample-comparison relations: they matched form comparisons to the corresponding colour samples, respectively. In the context of these arbitrary relations, new colours were paired with the form elements of the samples (Experiment 1), and new form elements were paired with the colour elements of the comparisons (Experiment 2). Subsequent tests assessed whether the new stimulus elements had control over responding when presented as single samples or comparisons. Test results showed that most subjects were able to relate the new stimulus elements to the corresponding colour and form elements, respectively. The study demonstrated that matching to compound stimuli in training and testing conditionsMaygenerate conditional relations between the individual stimulus elements.     

Contextualizing psychological contracts research: a multi-sample study of shared individual psychological contract fulfilment

ABSTRACT

Research on psychological contracts has made significant contributions to theoretically advancing our understanding of the employee-employer exchange relationship and its implications for organizational practice. However, the predominant emphasis of this empirical research has been on the individual level of analysis and in the process does not give sufficient attention to contextual influences. Teams have become a common feature in organizations today and provide a proximal context through which to understand how teams affect individuals’ evaluation of their psychological contract. Based on the macrosociological perspective of social exchange theory as well as theories on the role of social influence in psychological contract evaluations, we examine how shared individual psychological contract fulfilment (PCF) shapes the relationship between individual PCF and outcomes (employee’s own contributions and contextual performance) at the individual level as well as the predictors (group POS) and consequences (average employee contributions and average contextual performance) of shared individual PCF at the team level. Our findings from three studies, representing a total sample of 995 employees and 170 teams, provide support for the study hypotheses. This paper contributes to the psychological contract literature by conceptually and empirically addressing the role of a team context (shared individual PCF) and its impact on individual- and team-level relationships.     

Duties When an Anonymous Student Health Survey Finds a Hot Spot of Suicidality

Abstract

Public health agencies regularly survey randomly selected anonymous students to track drug use, sexual activities, and other risk behaviors. Students are unidentifiable, but a recent project that included school-level analysis discovered a school with alarmingly prevalent student suicidality. Given confidentiality protocols typical of surveillance, the surveyors were uncertain whether and how to intervene. We searched literature for duties to warn at-risk groups discovered during public health surveillance, but we found no directly applicable guidance or cases. Reasoning by analogy, we conclude that surveyors should contact the school’s leaders to call attention to its outlier status, but public warning is unwarranted. However, such an ad hoc decision to issue a warning, even if only to school leaders, raises significant practical, legal and ethical issues. National public health and education associations should produce guidance that clarifies ethical and legal duties owed to schools and students involved in population health-risk surveillance.     

Log Data Analysis with ANFIS: A Fuzzy Neural Network Approach

This study explores the use of the Adaptive Neuro-Fuzzy Inference System (ANFIS), a neuro-fuzzy approach, to analyze the log data of technology-based assessments to extract relevant features of student problem-solving processes, and develop and refine a set of fuzzy logic rules that could be used to interpret student performance. The log data that record student response processes while solving a science simulation task were analyzed with ANFIS. Results indicate the ANFIS analysis could generate and refine a set of fuzzy rules that shed lights on the process of how students solve the simulation task. We conclude the article by discussing the advantages of combining human judgments with the learning capacity of ANFIS for log data analysis and outlining the limitations of the current study and areas of future research.