The rat approximates an ideal detector of changes in rates of reward: implications for the law of effect.

Rats responded on 2 levers delivering brain stimulation reward on concurrent variable interval schedules. Following many successive sessions with unchanging relative rates of reward, subjects adjusted to an eventual change slowly and showed spontaneous reversions at the beginning of subsequent sessions. When changes in rates of reward occurred between and within every session, subjects adjusted to them about as rapidly as they could in principle do so, as shown by comparison to a Bayesian model of an ideal detector. This and other features of the adjustments to frequent changes imply that the behavioral effect of reinforcement depends on the subject's perception of incomes and changes in incomes rather than on the strengthening and weakening of behaviors in accord with their past effects or expected results. Models for the process by which perceived incomes determine stay durations and for the process that detects changes in rates are developed.     

“I’ll do it later”: Type of motivation,self-efficacy and homework procrastination

The aim of this study is to explore the role of motivation in the relations between self-efficacy and procrastination. One hundred seventy-one-fifth-grade students completed questionnaires that assessed the type of motivation the students have for homework, the level to which they procrastinate on doing homework, and their self-efficacy regarding homework. The results indicated that autonomous motivation both mediates and moderates the relations between self-efficacy and procrastination. These results highlight the importance of students’ type of motivation for homework, suggesting procrastination cannot be reduced simply by addressing students’ self-efficacy; but, they must be supported to adopt a more autonomous type of motivation.     

Building a practically useful theory of goal setting and task motivation. A 35-year odyssey

The authors summarize 35 years of empirical research on goal-setting theory. They describe the core findings of the theory, the mechanisms by which goals operate, moderators of goal effects, the relation of goals and satisfaction, and the role of goals as mediators of incentives. The external validity and practical significance of goal-setting theory are explained, and new directions in goal-setting research are discussed. The relationships of goal setting to other theories are described as are the theory's limitations.     

The emotional quality of childcare centers in Israel: The Haifa study of early childcare

Data from an Israeli project shows higher proportion of insecurely attached infants in center care as compared with noncenter care (Sagi, Koren‐Karie, Gini, Ziv, & Joels, 2002). The present study was designed to assess structural and emotional aspects characterizing infants' experiences in center care, aiming to explain, in part, the high incidence of attachment insecurity among center‐care infants. In the present study, we focus on 151 center‐care infants who were observed in the Ainsworth Strange Situation (Ainsworth, Blehar, Waters, & Wall, 1978) with their mothers. Sixty‐one percent of them were coded as securely attached to their mothers while 39% were coded as insecurely attached. In addition, 56 directors and 120 caregivers in 56 centers were videotaped throughout a full‐day observation. The Assessment Profile of Early Childhood Program (Abbott‐Shim & Sibley, 1987) was also employed. Results indicated that the centers in Israel are of low standards: Large group size, high caregiver–infants ratio, inadequate professional training, and minimal attention to individual emotional needs. No associations were found between infants' attachment and various aspects of the settings. The low quality of the Israeli settings may explain the higher rate of attachment insecurity in center‐care infants. ©2005 Michigan Association for Infant Mental Health.     

The important role of the context in which achievement goals are adopted: an experimental test

Two experimental studies using Elliot, Murayama, and Pekrun’s (Journal of Educational Psychology 103(3):632–648, 2011) differentiation between self-goals and task-goals, were conducted to examine the relative influence of achievement goals and motivational contexts on behavioral and emotional engagement. In Study 1, 133 college students were prompted to adopt self-goals (intrapersonal standards) or other-goals (performance standards) in one of two motivational contexts (autonomy-supportive or autonomy-suppressive) while playing a computer game. In Study 2, 129 college students performed the same assignment, this time adopting either other-goals or task-goals (absolute standards). Study 1 indicated that autonomy-support facilitated behavioral and emotional engagement in autonomy suppressive contexts, but self-goals merely promoted emotional engagement relative to other-goals. Study 2 replicated Study 1’s findings by showing that autonomy support promoted self-reported behavioral engagement and task-goals promoted emotional engagement but further revealed that only when task-goals were adopted in an autonomy-supportive context did they promote better behavioral engagement than other-goals. Thus, Study 2 highlighted the importance of the context in which the achievement goals were adopted (i.e., autonomy-supportive versus suppressive) as an important determinant of the outcome.