Amphetamine effects on MATRICS Consensus Cognitive Battery performance in healthy adults

Area of Science:

• Neuroscience
• Psychopharmacology
• Cognitive Science

Background:

• Cognitive deficits are a major cause of disability in schizophrenia.
• Identifying procognitive drugs is costly and challenging.
• Screening candidate drugs in healthy subgroups may be efficient.

Purpose of the Study:

• To investigate if the MATRICS Consensus Cognitive Battery (MCCB) can detect procognitive drug effects in healthy individuals.
• To examine amphetamine's (AMPH) effects on MCCB performance in specific subgroups.

Main Methods:

• A double-blind, placebo-controlled crossover study involving 60 healthy adults.
• Administration of 20 mg amphetamine (AMPH) and placebo.
• Comparison of AMPH effects in subgroups based on baseline MCCB scores and personality traits.

Main Results:

• Amphetamine (AMPH) did not significantly alter overall MCCB scores in healthy adults.
• AMPH improved MCCB performance in individuals with lower baseline scores and impaired it in those with higher scores.
• AMPH effects correlated with personality traits linked to schizophrenia.

Conclusions:

• Amphetamine's (AMPH) procognitive effects in healthy adults are subgroup-specific.
• Targeting "enriched" subgroups with specific neurocognitive or personality characteristics may improve the screening of procognitive drugs.