Depressive cognition: self-reference and depth of processing.

Area of Science:

• Cognitive psychology
• Clinical psychology
• Neuroscience

Background:

• Cognitive models of depression posit a link between depression and negatively biased thinking.
• Existing models focus on either the content (what is thought) or the processes (how it is thought) of cognition in depression.

Purpose of the Study:

• To review and evaluate evidence for content-based and process-based cognitive models of depression.
• To assess the validity of self-relevant content bias and depth of processing bias in depression.

Main Methods:

• Systematic review of existing literature on cognitive biases in depression.
• Evaluation of studies examining self-relevant content bias and depth of processing bias.

Main Results:

• Substantial evidence supports both content-based models (negativity bias for self-relevant information) and process-based models (bias in deeper cognitive processes) of depression.
• Both automatic and deeper cognitive processes are implicated in depressive biases.

Conclusions:

• Both self-relevant content and depth of processing are significant factors in cognitive models of depression.
• Future research should integrate content and process approaches using self-relevant stimuli and precise cognitive measures to understand attention, memory, and interpretation biases in depression.