Borrowing from Sleep to Pay Work and Family: Expanding Time‐Based Conflict to the Broader Nonwork Domain

We extend cross‐domain research by examining sleep, a domain within the larger nonwork domain that competes for time with work and family domains. We draw from scarcity theory and research on slack resources to contend that, because people cannot increase the amount of time they have, they borrow time from sleep in order to spend more time working and with family. Utilizing a Bureau of Labor Statistics survey of 10,741 participants, we find nonlinear and interactive effects of time spent working and time spent with family on sleep time, suggesting that the negative effects of work and family on sleep time are especially strong when demands for work and family are high. In an experience sampling field study of 122 working adults, we similarly find a nonlinear effect of work time on sleep time as well as an interaction between work time and family time in predicting time spent sleeping. Both studies indicate that as slack time resources become increasingly scarce, time spent working and time spent with family have increasingly powerful negative effects on time spent sleeping. Contrary to our expectations, we found no support for gender as a moderator of these effects.     

The role of attention in temporal integration

When two visual patterns are presented in rapid succession, their contours may be combined into a single unified percept. This temporal integration is known to be influenced by such low-level visual factors as stimulus intensity, contour proximity, and stimulus duration. In this study we asked whether temporal integration is modulated by an attentional-blink procedure. The results from a localisation task in experiment 1 and a detection task in experiment 2 pointed to two separate effects. First, greater attentional availability increased the accuracy of spatial localisation. Second, it increased the duration over which successive stimuli could be integrated. These results imply that theories of visible persistence and visual masking must account for attentional influences in addition to lower-level effects. They also have practical implications for use of the temporal-integration task in the assessment of group and individual differences.     

When groups are more competitive than individuals: the domain of the discontinuity effect

The related goals of the research were to delineate the domain of discontinuity, 1st by demonstrating its occurrence in a nonmatrix situation and, 2nd, by establishing the antecedent outcome conditions necessary for producing a discontinuity effect. The 1st goal was met by designing a mixed motive situation involving the production of origami products. Under these conditions, the magnitude of the discontinuity effect did not significantly differ from that in a matrix-only condition. The 2nd goal was met by a separate experiment that used H. H. Kelley and J. W. Thibaut's (1978) analysis of degree of noncorrespondence of outcomes. This experiment demonstrated that as noncorrespondence increased, so did the rate of competitive responding by groups but not by individuals. This pattern was qualified by an interaction with gender such that competitiveness was more markedly affected by noncorrespondence for groups of women than for groups of men.     

On weighted exponential entropies

As an alternative to Shannon's classical entropy measure of information, an exponential entropy function was proposed by Pal and Pal in 1989 and 1991. To generalize Pal's entropy further, this author introduced two different families of exponential entropies that are one-parameter generalizations of Pal's entropy. The purpose of the present paper is to define weighted entropies corresponding to those one-parameter generalizations. Some properties and examples of such weighted exponential entropies are discussed.     

Paternal and maternal influences on family functioning among Hong Kong Chinese families

The linkages between dyadic relationships in the family and family functioning were examined in 378 Chinese families on two occasions. The following dyadic relationships were investigated: (a) parent-child relationship qualities reported by adolescent children (questionnaire and interview measures of parenting style, parent-adolescent conflict, parent-adolescent communication, and parent-adolescent relationship) and by their parents (questionnaire measures of parent-child relationship quality and demand); and (b) marital quality reported by the parents via questionnaire measures. Results showed that parents' and children's views of family functioning were longitudinally related to dyadic relationships in the family. Relative to mother-adolescent relationship and mothers' report of marital quality, father-adolescent relationship and fathers' report of marital quality were generally found to have a stronger association with perception of family functioning and its change over time.     

Evaluation of cognitive diathesis-stress models in predicting major depressive disorder in adolescents

Diathesis-stress predictions regarding the onset of adolescent major depression and nonmood disorders were tested. Adolescents (N = 1,507) were assessed for dysfunctional attitudes and negative attributional style, as well as current depressive symptoms, current depressive and nondepressive diagnoses, and past and family histories of psychopathology. Approximately 1 year later, participants were reassessed on all measures. Analyses supported A. T. Beck's (1976) theory of depression (at the level of a trend) but not the hopelessness theory of depression. Findings were suggestive of a threshold view of vulnerability to depression; for those who experienced negative life events, depressive onset was related to dysfunctional attitudes but only when dysfunctional attitudes exceeded a certain level (low = intermediate < high). For participants who scored either very high or very low on both dysfunctional attitudes and negative attributional style, nonsignificant findings were obtained.     

What guides a search for food that has disappeared? Experiments on cotton-top tamarins (Saguinus oedipus).

When food is launched down a vertically positioned S-shaped opaque tube, cotton-top tamarins (Saguinus oedipus) search for the food in the position directly beneath the release point, even though over several trials it never appears in this position (B. M. Hood et al., 1999). Experiment 1 showed that when the trajectory of the food shifts from the vertical to the horizontal plane, tamarins no longer show systematic perseverative errors and, in general, perform better on this invisible displacement task. Experiment 2 showed that tamarins with experience on the horizontal task show less of a bias when tested on the vertical task but nonetheless fail overall to solve this invisible displacement problem; their performance is substantially worse than it was on the horizontal task. Experiment 3 revealed that when the vertically positioned tube is replaced by an occluded ramp, tamarins consistently search in the compartment below the release point, even though most of the tamarins had experience in Experiments 1 and 2. Overall, results indicate that tamarins have a significant gravity bias when searching for food that has disappeared along the vertical plane but also have more general problems finding food that has moved out of sight.     

Intellectual disability and the myth of the changeling myth

This article investigates the historical sources for the idea of the "changeling" or substitute child as an explanation for congenital intellectual disability. Pre-modern sources for this idea are elite and theological as much as popular and folkloric, nor do they refer to intellectual disability in any sense recognizable to us. Rather, both the concept of intellectual disability and the notion of a transhistorical changeling myth emerge from the historical core of modern psychology.