Universal sex differences in the desire for sexual variety: tests from 52 nations, 6 continents,and 13 islands

Evolutionary psychologists have hypothesized that men and women possess both long-term and short-term mating strategies, with men's short-term strategy differentially rooted in the desire for sexual variety. In this article, findings from a cross-cultural survey of 16,288 people across 10 major world regions (including North America, South America, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, South/Southeast Asia, and East Asia) demonstrate that sex differences in the desire for sexual variety are culturally universal throughout these world regions. Sex differences were evident regardless of whether mean, median, distributional, or categorical indexes of sexual differentiation were evaluated. Sex differences were evident regardless of the measures used to evaluate them. Among contemporary theories of human mating, pluralistic approaches that hypothesize sex differences in the evolved design of short-term mating provide the most compelling account of these robust empirical findings.     

The contribution of EEG coherence to the investigation of language

The contribution of EEG coherence analysis to the investigation of cognition and, in particular, language processing is demonstrated with examples of recent EEG studies. The concept of EEG coherence analysis is explained, and its importance emphasized in the light of recent neurobiological findings on frequency-dependent synchrony as a code of information processing between nerve cell assemblies. Furthermore, EEG coherence studies on naturally spoken and written word and sentence processing are reviewed and experimental results are presented giving new insights into the occurrence of "transient functional language centers" within the brain.     

A comparison of maladaptive behaviors of athletes and nonathletes.

A comparison of maladaptive behavior tendencies of men and women who were athletes and nonathletes was undertaken. Participating students (N = 200) were divided into four groups: male athletes, male nonathletes, female athletes, and female nonathletes. Maladaptive behavior tendencies were determined from responses on C. MacAndrew's (1965) Alcoholism Scale. The statistical analysis used was an independent groups 2 x 2 analysis of variance to determine significant main effects and interaction effects. The mean maladaptive behavior score (MBS) for athletes (M = 21.87) was significantly higher (p < .05) than the MBS for nonathletes (M = 20.24). The MBS for the men (M = 21.68) was significantly higher (p < .05) than the MBS for the women (M = 20.43). No significant interaction (p > .05) between gender and athletic status was found. Male athletes are more likely than the other 3 groups to have maladaptive behavior tendencies. Research directed toward greater understanding and the development of preventive and coping techniques for this population is needed.     

Comparison of Scoring Criteria for Clock Drawing Test

This study compared clock drawings by 42 medically hospitalized patients with a mean age of 51.9 (SD = 10.1) years, using four sets of published scoring criteria to determine comparability of classification and to assess validity by comparison to other measures of cognitive functioning. We found impairment in 20 of 42 cases using the criteria of Mendez et al. (1992); 11 of 42 cases by Sunderland et al. (1989); 9 of 42 cases with Freedman et al. (1994); and 8 of 42 cases according to Rouleau et al. (1992). Kappa coefficients of impairment status between sets of scoring criteria ranged from .41 to .86. Pearson correlations of raw scores between schemes ranged from .72 to .94. All except Sunderland et al. were significantly correlated with the Standardized Mini-Mental State Examination. All correlated significantly with the Wechsler Adult Intelligence Scale–Revised Block Design; however, only Mendez et al. correlated significantly with the Neurobehavioral Cognitive Status Examination. On the basis of these results and our experience, we recommend using the Freedman scoring scheme.     

Reading/writing between the lines

This paper critically examines the practices of reading and writing through the differing perspectives offered by Kierkegaard, Sartre, Barthes, Foucault, and Derrida. Although Kierkegaard's and Sartre's respective views on reading and writing do not receive much attention today, I argue that both articulate (albeit in different ways) a notion of shared responsibility between reader and writer that is compatible with their respective emphases on absolute responsibility for oneself, for others, and for the situation. An advantage to both Sartre's and Kierkegaard's accounts from a postmodern perspective, is that they affirm the simultaneity of individual and co-responsibility without appealing to a fixed or unitary self.     

SELECTIVE ASSOCIATIONS PRODUCED SOLELY WITH APPETITIVE CONTINGENCIES: THE STIMULUS-REINFORCER INTERACTION REVISITED

In studies reporting stimulus-reinforcer interactions in traditional conditioning paradigms, when a tone-light compound was associated with food the light gained stimulus control, but when the compound was paired with shock avoidance the tone gained control. However, the physical nature of the reinforcerrelated events (food vs. shock) presented in the presence of the tone-light compound was always confounded with the conditioned hedonic value of the compound's presence relative to its absence. When the compound was paired with shock, its presence was negative relative to its absence (which was shock-free). In contrast, when the compound was paired with food, its presence was positive relative to its absence (which was food-free). The present experiment dealt with this confounding effect by conditioning a tone-light compound to be positive or negative, relative to its absence, solely with food reinforcement. One group of rats received food for responding in the presence of the tone-light compound and no food in its absence. The other group also responded in the presence of the compound, but received food only in its absence. These rats were trained on a chained schedule in which responding in the presence of the tone-light compound produced a terminal link signaled by the absence of the compound; responding ceased in the terminal link because it delayed food delivery. In a test session to assess stimulus control by the elements of the compound, tone and light were presented separately under extinction conditions. Rats that had been exposed to a positive correlation between food and the compound emitted almost double the responses in the presence of the light as in the presence of the tone. In comparison, rats that had been exposed to a negative correlation emitted only two thirds as many responses in the presence of the light as in the presence of the tone. Because this selective association was produced using only food, it appears that the contingencies under which a reinforcer is presented, rather than (or as well as) its physical properties, can generate the selective associations previously attributed to “stimulus-reinforcer interactions.” This could mean that regardless of the class of reinforcer that ultimately maintains responding (appetitive or aversive), the contingency-generated hedonic value of the compound stimulus may influence the dominant modality of stimulus control.     

The human genome project: A public forum. Report on a model conference for genetics professionals and consumers

This paper reports on the rationale, objectives, and outcome of a conference titled The Human Genome Project: A Public Forum. One of the distinguishing features of this conference was that it included both genetics professionals and consumers of genetics services in a dialogue about the potential ethical, legal, and social implications of learning more about one's genes. The conference was planned to yield two products: (1) a set of recommendations for planners of future educational, research, and public policy efforts related to the Human Genome Project; and (2) an assessment of participants' pre- and post-conference knowledge and opinions about the Human Genome Project.     

Postpartum depression: Proposal for prevention through an integrated care and support network

Social science research and clinical literature concur with our experience as providers of psychoeducational and clinical services: Postpartum depression results from the interplay of a multitude of individual and contextual factors. In light of the extensive literature on postpartum depression, it is surprising that models for prevention have not been established. We propose a model for prevention through integrated care and support, in which a wide range of existing services are used. This model is similar to comprehensive prevention models proposed by advocates of integrated service systems, such as community mental health and family support. The article includes illustrative case material.     

Cognitive modifiability as a function of mother–child mediated learning strategies,mothers' acceptance–rejection,and children's personality

This study investigated (a) the effects of mediated learning experience (MLE) in mother–child interactions on cognitive modifiability as measured by dynamic assessment, (b) the effects of mothers' acceptance–rejection towards their children and the children's personality on the mothers' MLE strategies, (c) the combined effects of the mothers' acceptance–rejection, children's personality, and MLE strategies on children's cognitive modifiability, and (d) the prediction of cognitive modifiability by MLE interactions in two distinct conditions: free-play and structured. Fifty-four mother–child dyads (26 boys and 28 girls) in grade 2 were videotaped interacting in two situations: free-play and structured. The interactions were analysed with observation of mediation instrument using five criteria: intentionality and reciprocity, transcendence, meaning, feelings of competence, and regulation of behaviour. The children were administered the parent acceptance–rejection questionnaire, the personality assessment questionnaire, and the children's inferential thinking modifiability test. A distal–proximal factors of cognitive modifiability model was used to explain causal paths among mothers' acceptance–rejection and children's personality (distal) on MLE (proximal), and of both on children's cognitive modifiability. A structural equation model analysis revealed that (a) all MLE criteria were predicted by the distal factors of mothers' acceptance–rejection and children's personality, (b) none of the mothers' attitudes or children's personality factors explained the children's cognitive factors, (c) MLE criteria of transcendence and regulation of behaviour explained the children's CITM-post-teaching score but not the CITM-pre-teaching score. The results are discussed in relation to Feuerstein's MLE theory and Tzuriel's previous results with preschool children. © 1998 John Wiley & Sons, Ltd.     

Get the picture? The effects of iconicity on toddlers' reenactment from picture books

What do toddlers learn from everyday picture-book reading interactions? To date, there has been scant research exploring this question. In this study, the authors adapted a standard imitation procedure to examine 18- to 30-month-olds' ability to learn how to reenact a novel action sequence from a picture book. The results provide evidence that toddlers can imitate specific target actions on novel real-world objects on the basis of a picture-book interaction. Children's imitative performance after the reading interaction varied both as a function of age and the level of iconicity of the pictures in the book. These findings are discussed in terms of children's emerging symbolic capacity and the flexibility of the cognitive representation.