Attribution Theory: Interpreting Motivation

Maria is a high school student who consistently volunteers for various community service activities. When asked about her motivation for helping others, she states, "I really enjoy making a positive impact in my community and helping those in need." However, her friends sometimes perceive her actions as self-serving, suggesting that she is just trying to look good in front of colleges to enhance her applications.

This scenario illustrates the different interpretations of behavior through the lens of attribution theory. Based on the definitions of internal and external attributions, how would one best explain Maria's motives according to her friends' perspective?