Infants’ developing expectations of possible and impossible tool-use events between ages 8 and 12 months

Infants’ developing causal expectations for the outcome of a simple tool-use event from ages 8 to 12 months were investigated. Causal expectations were studied by comparing infants’ developing tool-use actions (i.e. as tool-use agents) with their developing perceptual reactions (i.e. as tool-use observers) to possible and impossible tool-use events. In Experiment 1, tool-use actions were studied by presenting infants, ages 8 and 12 months, with tool-use object-retrieval problems. In Experiment 2, a second age-matched sample of infants watched a comparable series of possible and impossible tool-use events in which a tool was used to retrieve a goal-object. Two core related findings were made. First, infants’ causal action and causal perception develop in parallel. In both action and perception, supporting tool-use develops before surrounding tool-use. Second, infants’ tool-use action develops before their causal perception of comparable tool-use events. The findings support the constructivist hypothesis that infants’ causal actions may develop before and inform their causal perceptions.     

Environmental determinants of memory improvement in late adulthood

Two studies were conducted with nursing home residents to determine whether memory could be improved. This was accomplished by increasing the cognitive demand of the environment and then varying the extent to which residents were motivated to attend to and remember these environmental factors. In Study 1, motivation to practice recommended cognitive activities was manipulated by varying the degree of reciprocal self-disclosure offered by interviewers in a series of dyadic interactions. In Study 2, motivation to practice recommended cognitive activities was manipulated by varying whether positive outcomes were contingent on attending to and remembering these activities, which increased in demand over time. Whether as a function of interpersonal (Study 1) or practical (Study 2) incentives, engaging in cognitive activity resulted in improvement on standard short-term memory tests, including probe recall and pattern recall, as well as in improvement on nurses' ratings of alertness, mental activity, and social adjustment for experimental groups relative to controls.     

Trust in hybrid human-automated decision-support

Research has examined trust in humans and trust in automated decision support. Although reflecting a likely realization of decision support in high-risk tasks such as personnel selection, trust in hybrid human-automation teams has thus far received limited attention. In two experiments (N₁ = 170, N₂ = 154) we compare trust, trustworthiness, and trusting behavior for different types of decision-support (automated, human, hybrid) across two assessment contexts (personnel selection, bonus payments). We additionally examined a possible trust violation by presenting one group of participants a preselection that included predominantly male candidates, thus reflecting possible unfair bias. Whereas fully-automated decisions were trusted less, results suggest that trust in hybrid decision support was similar to trust in human-only support. Trust violations were not perceived differently based on the type of support. We discuss theoretical (e.g., trust in hybrid support) and practical implications (e.g., keeping humans in the loop to prevent negative reactions).     

The development of awareness of stuttering in preschool children

The development of awareness of stuttering and of fluent speech in preschool children was examined by means of an instrument designed for this purpose. The measure employs a videotape of two identical puppets, one of whom stutters. Twenty stuttering children and twenty normally fluent children were followed for three visits over two years. The effects of group, age, and severity on the awareness score over the three visits were investigated. Results indicated statistical significance for experimental versus control groups, for older versus younger subgroups, and between the first and second, and first and third visits. Differences in stuttering severity were not associated with statistically significant differences in awareness scores. Theoretical and clinical implications are discussed.     

The Relationship between Mindfulness and Subjective Well-Being: Examining the Indirect Effects of Self-Connection and Meaning in Life

Over the past decade, support for the relationship between mindfulness and happiness has increased dramatically. The consensus is that people who are mindful also experience greater happiness. However, little is still known about how and why greater mindfulness leads one to be happier. The current research calls on recent theorizing to help understand the process by which this occurs. In particular, we studied the indirect effects of both self-connection and meaning in life on the relationship between mindfulness and subjective well-being. To this end, we compiled data collected in our lab over the past 3 years. A total of 2,929 participants provided cross-sectional data while 465 participated in longitudinal studies. Across both samples, the data supported our proposed model. Self-connection and meaning in life combined to mediate the relationship between mindfulness and the various aspects of subjective well-being. In all, it is clear that, although mindfulness is important, self-connection and meaning in life play key roles in one’s subjective well-being. This suggests that more research and interventions should focus on ways to increase self-connection and meaning in life as ways to help people experience greater happiness.

     

A longitudinal multilevel model analysis of the within-person and between-person effect of effortful engagement and academic self-efficacy on academic performance

Using data from an accelerated longitudinal study, we examined the within-person and between-person effect of effortful engagement and academic self-efficacy on academic performance across students (N = 135) in elementary school. Teachers assessed participants' effortful engagement and participants rated their academic self-efficacy once per year for 3 years. Academic performance was assessed through standardized test scores in reading and math. Multilevel models indicated that within-person change in Effortful Engagement and Academic Self-Efficacy scores significantly predicted concomitant within-person change in reading test scores, B = 2.71, p = .043, Pseudo-R² = .02 and B = 4.72, p = .005, Pseudo-R² = .04, respectively. Participants with higher between-person levels of Effortful Engagement had higher initial reading test scores, B = 10.03, p = .001, Pseudo-R² = .09, and math test scores, B = 11.20, p < .001, Pseudo-R² = .15, whereas participants with higher between-person levels of Academic Self-Efficacy showed a faster rate of increase in math test scores across elementary school, B = 10.21, p = .036, Pseudo-R² = .25. At the between-person level, Effortful Engagement mediated the association between Academic Self-Efficacy and both reading and math test scores, although no support was found for mediation at the within-person level. Collectively, results suggest that trait-level psychological factors can vary meaningfully within school-aged children and that both within-person change and between-person individual differences in these traits have important consequences for academic performance.     

Petition and contemplation in Maimonides’ conception of prayer

Maimonides’ statements on prayer pose considerable challenges to interpreters who seek to find his work a unified and coherent philosophy of religion. It is especially difficult to see how his advocacy of a silent meditation that follows intellectual comprehension of divine matters can be harmonized with his thoroughly ritualized approach to the daily supplicatory prayer of Jewish liturgy. Yet, it is the purpose of the following pages to outline an interpretation of Maimonides’ philosophy of religion according to which supplicatory prayer and intellectual meditation are not disparate spiritual phenomena, but complementary dimensions of a distinctive form of ethical‐intellectual worship.