This document provides an overview of attribution theory and explanatory styles in psychology. It discusses how people make causal attributions to explain behaviors, either internally based on personal factors or externally based on environmental factors. Explanatory style refers to a person's typical way of making these attributions along the dimensions of internal vs. external, stable vs. unstable, and global vs. specific. The document provides examples of how to analyze attributions using these dimensions and defines a pessimistic explanatory style.