Making Merit Work at the Entrance to the Engineering Workforce: Examining Women’s Experiences and Variations by Race/Ethnicity

Sex Roles - This study utilizes interviews from 22 young female engineers from diverse racial/ethnic backgrounds as they first entered the White and male-dominated engineering labor force with the...     

Reinforcement learning in the brain

A wealth of research focuses on the decision-making processes that animals and humans employ when selecting actions in the face of reward and punishment. Initially such work stemmed from psychological investigations of conditioned behavior, and explanations of these in terms of computational models. Increasingly, analysis at the computational level has drawn on ideas from reinforcement learning, which provide a normative framework within which decision-making can be analyzed. More recently, the fruits of these extensive lines of research have made contact with investigations into the neural basis of decision making. Converging evidence now links reinforcement learning to specific neural substrates, assigning them precise computational roles. Specifically, electrophysiological recordings in behaving animals and functional imaging of human decision-making have revealed in the brain the existence of a key reinforcement learning signal, the temporal difference reward prediction error. Here, we first introduce the formal reinforcement learning framework. We then review the multiple lines of evidence linking reinforcement learning to the function of dopaminergic neurons in the mammalian midbrain and to more recent data from human imaging experiments. We further extend the discussion to aspects of learning not associated with phasic dopamine signals, such as learning of goal-directed responding that may not be dopamine-dependent, and learning about the vigor (or rate) with which actions should be performed that has been linked to tonic aspects of dopaminergic signaling. We end with a brief discussion of some of the limitations of the reinforcement learning framework, highlighting questions for future research.     

Eating Attitudes and Dieting Behavior Among Religious Subgroups of Israeli-Arab Adolescent Females

Objectives The aim of the study was to compare the eating attitudes and behaviors, including weight concerns and dieting behavior, among three religious subgroups (Moslems, Druze, and Christians) and three age subgroups (12–13, 14–15, and 16–18 years old) of Israeli-Arab adolescent females. Methods The sample consisted of 1141 Israeli-Arab adolescent females, including 926 (81.2%) Moslem, 128 (11.2%) Christian, and 87 (7.6%) Druze schoolgirls in the seventh to twelfth grades. Participants were assessed using the EAT–26 questionnaire. Results The results showed that 75% of the students had a negative EAT-26 score (>20) and that 25% of the students had a positive EAT-26 score (<20). No significant differences were found in total scores, subscale scores, or scores above 20 between the age subgroups or the religious subgroups. The results demonstrated a high prevalence of disturbed eating attitudes and behaviors among Israeli-Arab adolescent schoolgirls. Discussion Higher prevalence of disturbed eating attitudes found among Israeli-Arab schoolgirls as compared to their Jewish counterparts. Although our sample is a communal based, there still remains an open question as to why the desired “slenderness culture” evident in the results is not reflected in the number of ED clinic referrals, among clinical population. These discrepancies were discussed in light of ethnicity-specific factors that may influence the perceived severity of eating disorders and the receptiveness of primary practitioners to address them.     

Marital discord and well-being in older adults: is the association confounded by personality?

The associations between marital discord and multiple measures of well-being (depression, anxiety, life satisfaction, and self-esteem) were evaluated in a population-based sample of 416 couples in which the husband was 65 years or older. Results indicated that greater marital discord was associated with greater depression and lower life satisfaction and self-esteem. Furthermore, the associations between marital discord and well-being remained significant when statistically controlling for the rival explanation of the Big Five personality traits. Finally, there was little evidence for gender differences in the magnitude of the associations between marital discord and well-being. Findings suggest that marital discord is an important correlate of multiple measures of well-being in older individuals and that this association is not confounded by the Big Five personality traits.     

Learning words and rules: abstract knowledge of word order in early sentence comprehension

Children quickly acquire basic grammatical facts about their native language. Does this early syntactic knowledge involve knowledge of words or rules? According to lexical accounts of acquisition, abstract syntactic and semantic categories are not primitive to the language-acquisition system; thus, early language comprehension and production are based on verb-specific knowledge. The present experiments challenge this account: We probed the abstractness of young children's knowledge of syntax by testing whether 25- and 21-month-olds extend their knowledge of English word order to new verbs. In four experiments, children used word order appropriately to interpret transitive sentences containing novel verbs. These findings demonstrate that although toddlers have much to learn about their native languages, they represent language experience in terms of an abstract mental vocabulary. These abstract representations allow children to rapidly detect general patterns in their native language, and thus to learn rules as well as words from the start.     

Launching themes in Israeli fathers and mothers

This study focused on launching processes as reflected in the reactions of Israeli parents to the drafting of their eldest son. A questionnaire tapping parents' reactions was constructed and administered to 237 couples. Factor analysis delineated eight substantive factors: Emotional Investment, Parent-Child Strains, Fostering Son's Maturity, Parental Disengagement, Parent's Transitional Phase, Dissatisfaction with Army, Son's Unpreparedness, and Strengthening Family Relations. The factors depicted modes of coping with launching and transitional midlife processes. The construct validity of the factor scales was examined in a multivariate regression analysis with 12 predictor variables related to sociodemographics, attitudes, personal concerns, and satisfactions. Mothers differed from fathers in some factor scale means as well as in the pattern in which the predictor variables related to the factor scale scores. The results are interpreted in terms of ambivalent launching reactions involving distress on the one hand and a sense of growth on the other. While adaptation to this transition in the family takes place within a specific cultural context, its implications for universal launching features are also discussed.     

Pathological Conflict Avoidance in Anorexia Nervosa: Family Perspectives

Conflict avoidance is a common pattern in families of patients with anorexia nervosa (AN), but little systematic controlled research has been conducted to elucidate the formal mechanics of such interaction. Forty family triads with daughters suffering from AN were compared to 40 matched control (CON) triads, on five measures of conflictual family situations. Results revealed that the AN group had significantly more difficulty in choosing the topic of discussion, adhering to the topic, developing and exploring the chosen topic, and reaching a solution—all within a family setting. Findings empirically support previous clinical and research evidence on the pathological avoidance of conflict in families with a member who has AN. Therapeutic implications are discussed.