Understanding Cleo's behaviour

Two psychologists, Charles and Inez, have a common acquaintance named Cleo. Charles thinks of himself as a causal scientist, but Inez considers herself a normative scientist. Both agree, however, that Cleo is very difficult to work with because she is quick to become frustrated and then to respond angrily to those around her. What kinds of explanations for Cleo's behaviour do you imagine Charles might propose? What kinds of explanations for Cleo's behaviour do you imagine Inez might propose?