This lecture explores the concepts of implicit bias and stereotype threat, focusing on their impact on engagement and attainment in university science, technology, engineering, and mathematics programs. It delves into gender differences in engineering participation and attainment across various countries, highlighting the underrepresentation of women and the influence of implicit biases. The discussion extends to stereotype threat, illustrating how negative stereotypes can affect performance and contribute to attrition rates in STEM education for women and minorities.