Dissertation: Petrasso 2010

Petrasso, Sara (1/10) What about social class? Situational and dispositional attributional processes involved in class-based stereotype threat effects (Gary Kose, Ph.D.; Joan Duncan, Ph.D.; Paul Ramirez, Ph.D.)
The current study investigated whether individuals' explanatory styles (i.e., Locus of Control and Attributional Style) influenced their vulnerabilty to stereotype threat. Participants were 96 university students who were randomly assigned to one of four conditions that varied in level of class-based threat (manipulated by presenting the task as diagnostic of intelligence or not, and by asking participants to reveal their parental income level as well as their subjective sense of their socioeconomic identity). Participants also completed self-report measures of Locus of Control and Attributional Style, and were asked to make causal attributions about their performance on a difficult 15-item test of verbal reasoning and vocabulary knowledge.

Results revealed a main effect of class-based stereotype threat. Diagnosticity had no effect on participant performance. A two-way interaction between threat condition and parental income level was found. Low SES participants in the threat condition performed more poorly than Low SES participants in the no-threat condition. The same was true, unexpectedly, for High SES participants. However, Middle-SES participants did not perform significantly differently. No significant performance differences were revealed between SES cohorts in the no threat condition. Attributional Style and Locus of Control were not found to influence stereotype threat vulnerability. Furthermore, causal attributions were not found to correlate to either Locus of Control or Attributional Style, nor were they affected by threat condition. Though the study has limitations, the findings strengthen the class-based stereotype threat arena. Implications and suggestions for future research are made.