Gender differences in the experience of jealousy have been the subject of research interest since the work of Freud. Recent research seems to indicate that males may be more distressed by their partners' sexual infidelity, whereas females are possibly more upset by emotional infidelity. Evolutionary psychologists believe these gender differences are the result of different adaptive problems faced by males and females over the course of evolutionary history. This view has been criticised by social psychologists and feminist theorists, who assert that gender differences in the experience of jealousy are the result of socialisation practices and power imbalances in society. This study examined gender differences in the experience of jealousy in a cross-cultural sample. The results provided only partial support for the evolutionary model. Strongly significant gender differences were found, but the difference was driven mostly by a large majority female dislike of emotional infidelity. Males across the sample were ambivalent, selecting sexual and emotional infidelity as approximately equally distressing. Significant cultural differences were found, suggesting that cultural factors may play a part in the experience of jealousy. / Thesis (M.A.)- University of Natal, Pietermaritzburg, 2002.

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A confirmatory approach based on a multidimensional model (Douglas, Roussos, & Stout, 1996; Shealy & Stout, 1993; Stout & Roussos, 1995) was used to identify sources of differential item functioning (DIF) and differential bundle functioning (DBF) for boys and girls on the British Columbia Principles of Mathematics Exam for grade 12 (PME12). Data consisted of a total of 9404 examinees; 4335 girls and 5069 boys. There were 45 multiple choice items in the exam. Analyses were completed in two stages. In stage 1, patterns present in the gender DIF research in mathematics were identified. Stage 2 was the statistical confirmation of these patterns. Sources of gender DIF were confirmed for the content areas: polynomial, quadratic relations, logarithms and exponents. Items tapping higher cognitive levels dealing with patterns and relation, word problems, and items containing visuals were also confirmed as a source of DIF. Exploratory analyses indicated that computation items for which no equations are provided may be a source of DIF along with trigonometry items. This study contributes to an increased understanding of sources of gender DIF that may assist test developers to ensure that mathematics items measure the construct that they are intended to measure and that the test as a whole measures that which it purports to measure. The findings of this research provide an additional source of information about the differential performance of boys and girls that may be used to develop guidelines and test construction principles for reducing gender DIF in mathematics. This research also contributes to a greater understanding of gender differences in mathematics learning and achievement.

Individuals who are high in psychopathic traits are known to cheat, lie, and manipulate others. One of the factors that may influence this behaviour is interpersonal judgment accuracy and tendency. There is some indication that increased psychopathic traits may be related to the ability to accurately judge the personality traits and emotions of others, and subsequently select individuals with characteristics that make them more vulnerable to manipulation and victimization. Alternatively, psychopathic traits may be related to a tendency to view others as possessing more vulnerable traits in general. The current study explored this topic by examining the relationship between psychopathic traits and the ability to accurately judge others’ personality traits and emotional states, as well the tendency to judge others as being more vulnerable. These relationships were examined in the overall sample as well by sex of judge and target. Male and female undergraduate students (N = 131) completed measures of psychopathic traits and narcissism. They were also asked to complete three tasks: 1) judge the personality traits and emotional states of individuals shown in brief video clips, 2) complete a memory task, select individuals who they would like to get to know better, and judge their vulnerability to being taken advantage of based on viewing photographs and brief written descriptions, and 3) judge brief displays of emotion. Results indicated that higher levels of psychopathic traits were related to enhanced judgment accuracy for certain traits and emotional states, but these relationships often varied depending on sex of judge and target. As well, psychopathic traits appeared to have a stronger relationship with judgment tendency than judgment accuracy, suggesting that individuals who are high in psychopathic traits tend to view others in a more negative light that may make them seem more vulnerable to manipulation. Judgment tendency also varied depending on sex of judge and target. Psychopathic traits showed stronger relationships with both judgment accuracy and tendency than narcissism. The results of the current study highlight the importance of continuing to study male and female psychopathy separately to gain an understanding of how psychopathic traits may manifest differently between the sexes.

The role of sex in the organization of movement is not commonly addressed in the literature. The objective of this thesis was to determine whether differences exist between males and females in the way they organize their movements during dodging to protect a food item. Detailed kinematic analysis of these movements in adult rats shows that females move their snout through a greater spatial curvature, relative to the pelvis, than males. The sex of the robbing animal did not alter the sex-typical movement paterns exhibited. Manipulation of neonatal androgens altered the sex-typical dodge patterns of both males and females. Removal of androgens at weaning however, did not affect the male-typical pattern. The existence of sex differences in the organization of movement provides a new level of analysis for the study of sexual dimorphism in behavior. / x, 228 leaves : ill. ; 28 cm.

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Recent genetic studies indicate an association between Attention Deficit Hyperactivity Disorder (ADHD) and the dopamine transporter gene (DAT1) with possible preferential relation to hyperactivity and impulsivity behaviours. The present study investigated attention-related behaviours in a non-clinical sample to determine whether the modulation of these behaviours is associated with genetic variability of the DAT1 within the normal population. A secondary question explored whether gender was associated with the measured attention-related behaviours. Twenty-six children were observed in the classroom during performance of independent academic work. Motor behaviours during task performance were scored using the Restricted Academic Situation Scale. Major behavioural problems were scored using the Conners' Teacher Rating Scale-Revised: Short Form (CTRS-R:S). All participants were genotyped for the DAT1. The results yielded no significant genotype group differences, although an association was found between oppositional behaviour (CTRS-R:S) and gender. These preliminary results are discussed within the current context of genetics research in ADHD.

The current study was designed to examine sex differences in group interaction in early childhood. Seven classes of four-year old children and six classes of five-year-old participated as subjects. Thirteen playgroups of 6 girls and 6 boys each were formed. Analyses of the girls' and boys' interactions showed that there was a marginally significant trend for girls to engage in more Simultaneous Group Interaction than boys. Analyses of a second measure, Coordinated Group Activity, demonstrated that boys, after five years of age, were found to engage in significantly more group interaction than girls. Findings revealed that in early childhood, males and females differ in their modes of interaction with peers (ie, their social structure), with age five as a transition period for males.

The Ideal Standards Model (Simpson, Fletcher and Campbell, 2001) suggests that individuals regulate themselves and their partners based on how closely their perceptions match their ideal standards. Overall, Fletcher and Simpson (2006) provided empirical support for the regulatory function of the Ideal Standards Model and concluded that standards which may initiate regulation reflect three pivotal domains; warmth/trustworthiness, attractiveness/vitality and status/resources. In Study 1, 150 individuals (in heterosexual relationships or had been in the previous six months) spontaneously reported prior regulatory attempts that had focused on changing themselves, their partner or their relationship. Participants then described their most salient regulatory attempt in detail and rated the success of this attempt. In Study 2, 96 individuals (in heterosexual relationships) self-rated various personality and relationship characteristics. Participants also indicated how they would likely respond (using a set of likert scales) to partner initiated regulation attempts which were provided via vignette descriptions. As predicted, results indicated (a) that regulatory attempts reflect the pivotal domains of the Ideal Standards Model, (b) predicted gender differences in the use of regulation, (c) increased regulatory success with the use of interpersonal strategies and (d) increased relationship quality with less negative reactions to regulatory attempts. Results also indicated that women were more likely to respond negatively than men, particularly when the regulation attempt focused on their attractiveness. Implication and explanations are discussed.