Department of Psychology

This thesis examined relations of multiple dimensions of gender identity same gender typicality, other-gender typicality, gender contentedness, gender oppression, felt pressure to conform, and gender centrality) to children's adjustment (global self-worth, narcissism, depression, internalizing behaviors, externalizing behaviors, and prosocial behaviors. Participants were 237 fourth through eighth graders (108 males, 129 females; M[underscore] age = 11 years, 4 months). Each measure of gender identity related to children's adjustment in a unique way. Findings also showed gender centrality to moderate relations of other gender identity variables to adjustment, suggesting that how central gender is to a child influences the impact of other gender self-appraisals on the child's development and adjustment.

Two potential developmental costs of high self-esteem were investigated. One was that high self-esteem leads children to act on antisocial cognitions (the disposition activating hypothesis). The other was that high self-esteem leads children to rationalize antisocial conduct (the disposition-rationalizing hypothesis). Both hypotheses were explored in two longitudinal studies with preadolescents. In Study 1 (N = 189) the antisocial behavior was aggression; in Study 2 (N = 407) the antisocial behavior under focus was avoidance of the mother. There was little evidence for the disposition-activating hypothesis in either study but considerable support for the disposition-rationalizing hypothesis in both studies. Over time, aggressive children with high self-esteem increasingly valued the rewards that aggression offers and belittled their victims, and avoidant children with high self-esteem increasingly viewed their mother as harassing and uninvolved. Results therefore suggest that for antisocial children, high self-esteem carries costs, for both themselves and others.

Forty-one women filled out surveys about their heterosexual sexual behavior over the course of 30 days. These surveys tracked their menstrual cycles, sexual behavior, sexual desires, and orgasm frequency. Although the sample size was small, a number of borderline statistically significant (p < .10) trends emerged from the analysis: women experienced more copulatory orgasms on average when fertile and women who were not in relationships tended to have more frequent non-copulatory orgasms. Naturally cycling women also experienced significantly more non-copulatory orgasms when fertile. Although no strong conclusions can be drawn from the current sample, the results suggest many avenues for future research.

This study tested the hypotheses that phonological memory contributes to vocabulary and grammatical development in young Spanish-English bilinguals, and that the relation between phonological memory and both vocabulary and grammar is language-specific. Phonological memory skill was the percentage of consonants correctly repeated (PCC) in English, and Spanish Nonword Repetition (NWR) tasks at 22 months. Vocabulary size and grammatical complexity were measured at 25 months using the English and Spanish versions for the MacArthur-Bates Communicative Development Inventories. Nonword repetition accuracy was significantly related to both subsequent vocabulary size and grammatical complexity within and across languages after controlling for the percentage of input in English. The relations were not significantly higher within than between languages. The results suggest that in these young Spanish-English simultaneous bilinguals phonological memory is a language-general ability that contributes to the development of vocabulary and grammar in both English and Spanish.