Complex sentence: Cognitive slippage is a symptom related to several mental disorders (citations: Oltmanns; Meehl; Berg; Ghaziuddin; Strauss; Yates) associated with cognition and considered a milder form of formal thought disorder (citation: Meehl).
Split into simpler sentences: Cognitive slippage is a symptom related to several mental disorders (citations: Oltmanns; Meehl; Berg; Ghaziuddin; Strauss; Yates). It is associated with cognition and considered a milder form of formal thought disorder (citation: Meehl).