The view that depression is linked to irrational thinking is supported by research
Hammen and Krantz 1977 found depressed participants made more errors in logic when asked to interpret written material than did non-depressed participants
Bates et al. (1999) found that depressed participants who were given negative automatic thought statements became more and more depressed
The link between negative thinking and depression does not mean that negative thoughts cause depression. Instead, negative thinking may develop because of their depression
The strength of the cognitive approach lies in its focus on the client's mind and recovery, but other aspects of the client's environment and life may also need to be considered
The biological approach to understanding mental disorder suggests that genes and biology may play a role in depression, providing an alternative explanation to the cognitive approach