Mind wandering, poor sleep, and negative affect: a threefold vicious cycle?

Area of Science:

• Psychology
• Neuroscience
• Clinical Psychiatry

Background:

• Mind wandering (MW) is linked to sleep disturbances and negative affect.
• These connections have clinical relevance for psychiatric disorders such as ADHD, depression, and anxiety.
• Bidirectional relationships between sleep and negative affect are established, but MW's directional influence is less clear.

Purpose of the Study:

• To review studies examining the temporal sequence of relationships between mind wandering propensity, sleep, and affect.
• To clarify the directional influences within the MW-sleep-affect triad.

Main Methods:

• Literature review of studies investigating temporally sequential relationships.
• Analysis of evidence for causal links between affect, MW, and sleep.

Main Results:

• Clear evidence shows affect influences MW, and MW influences sleep.
• Less conclusive evidence supports MW influencing affect and sleep influencing MW.
• A cyclical model (MW propensity → disturbed sleep → negative affect → MW propensity) is supported by available data.

Conclusions:

• Individual reinforcement loops may form a threefold vicious cycle contributing to psychiatric disorders.
• The cycle "MW propensity → disturbed sleep → negative affect → MW propensity" appears to be a significant perpetuating factor.