RESUMEN
Cognitive difficulties are common in people with mental health issues, including psychotic disorders, although this population may have difficulty accessing treatments due to various challenges, including transportation, remembering appointments, or discomfort in crowded or unfamiliar places. Home-based services can be crucial and effective for reaching populations with accessibility issues; one home-based intervention technique is individual cognitive stimulation (iCS), which has been shown to be an effective strategy to target and improve cognitive functioning in various samples. Using a previously established Portuguese iCS protocol, based on an initial brief cognitive assessment and the subsequent administration of cognitive stimulation materials and reflection exercises, the current randomized controlled trial explored the effectiveness of the iCS intervention on participants in Portugal with psychotic disorders. Outcome tools included measures of cognition, depression, quality of life, and functional abilities at baseline, the completion of the intervention, and post-intervention follow-up. With two well-matched groups at baseline, the results revealed significant improvements in the intervention group on cognitive functioning, depression, quality of life, and, more modestly, functional activities. These results offer an important contribution to the field of iCS protocols, in an effort to enhance the lives and well-being of various clinical populations, including those with psychotic disorders.