Influence of cognition and symptoms of schizophrenia on IADL performance

Lena Lipskaya*, Tal Jarus, Moshe Kotler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


People with schizophrenia experience difficulties with instrumental activities of daily living (IADL), which are required for independent living. Yet, factors that influence IADL performance are still poorly understood. Identification of such factors will contribute to the rehabilitation process and recovery. The present study aimed to examine the influence of cognitive abilities, schizophrenia symptoms, and demographic variables on IADL functioning during acute hospital admission. The participants were 81 adults with DSM-IV chronic schizophrenia. They were assessed on the Revised Observed Tasks of Daily Living (OTDL-R), the Positive and Negative Syndrome Scale (PANSS), the Neurobehavioral Cognitive Status Examination (Cognistat), and the Kitchen Task Assessment (KTA) at acute hospitalization. The prediction model of IADL performance at this time consists of executive functioning (explained 21% of variance), memory and abstract thinking (explained 13.5%), negative symptoms (explained 13%), age of illness onset and years of education (explained 8%). The total explained variance is 53.5%. These results provide evidence-based guidelines for the evaluation process in inpatient settings. Such guidelines are important since planning of intervention processes and appropriate community integration programs often occurs during acute hospitalization, while the structured nature of inpatient settings limits natural variability in occupational performance.

Original languageAmerican English
Pages (from-to)180-187
Number of pages8
JournalScandinavian Journal of Occupational Therapy
Issue number3
StatePublished - Sep 2011
Externally publishedYes

Bibliographical note

Funding Information:
The investigation was carried out in accordance with the Declaration of Helsinki and was approved by the Ministry of Health Ethics Committee. Informed written consent was obtained from the participants following full explanation of the nature of the procedures.


  • Acute hospital admission
  • mental health
  • neurocognition
  • occupational performance


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