. The 5 Main Feelings That Undermine Group Members' Performance on IQ Tests

Self-Fulfilling Prophecy: According to a study published in the Journal of Education Psychology, self-fulfilling prophecies can have a significant effect on test scores. The study found that when students were told that they would do well on a test, they had higher scores than when they received no feedback. Gender Bias: Studies have found that gender bias can have a negative effect on the performance of group members on IQ tests. In one study published in the Personality and Individual Differences journal, researchers found that male participants performed worse than females when they were tested on the same IQ test. Culture: Culture can also have a significant impact on the performance of group members on IQ tests. In a study conducted by the University of Cambridge and published in the British Journal of Psychology, researchers found that cultural stereotypes associated with gender, race, and socio-economic status could lead to significant differences in the scores of members of different groups. Stereotype Vulnerability: Another factor that can impact the performance of group members on IQ tests is stereotype vulnerability. According to a study conducted by researchers from the University of California, Berkeley and published in the Journal of Personality and Social Psychology, stereotype vulnerability can lead to lower scores on IQ tests. The researchers found that stereotype vulnerability could lead to significant decreases in scores, particularly when the test was administered to participants from gender or ethnic minority groups.