Investigating the impact of peer supplemental instruction on underprepared and historically underserved students in introductory STEM courses.

Background: Supplemental instruction (SI) is a well-established mode of direct academic support, used in a wide variety of courses. Some reports have indicated that SI and similar peer-led academic support models particularly benefit students identifying with historically underserved racial/ethnic groups in STEM. However, these studies have not explicitly examined the role of prior academic experiences, an important consideration in college success.

Complexity and valence in ethnophaulisms and exclusion of ethnic out-groups: what puts the "hate" into hate speech?

Ethnophaulisms (A. A. Roback, 1944) are the words used as ethnic slurs to refer to out-groups in hate speech.

Without mercy: the immediate impact of group size on lynch mob atrocity.

Two independent research traditions have focused on social contributions to lynching. The sociological power threat hypothesis has argued that lynching atrocity will increase as a function of the relative number of African Americans. The psychological self-attention theory has argued that lynching atrocity will increase as a function of the relative number of mob members.

A social psychological study of ethnonyms: cognitive representation of the in-group and intergroup hostility.

Ethnonyms (M. G. Levin & L.