<Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (February 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (February 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> Humans are motivated to assign causes to their actions and behaviors . In social psychology, attribution is the process by which individuals explain the causes of behavior and events . Models to explain this process are called attribution theory . Psychological research into attribution began with the work of Fritz Heider in the early 20th century, and the theory was further advanced by Harold Kelley and Bernard Weiner . </P> <P> Gestalt psychologist Fritz Heider is often described as the early - 20th - century "father of attribution theory". </P>

Who was the psychologist who originally developed attribution theory
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