Contextual predictability enhances reading performance in patients with schizophrenia.

Area of Science:

• Cognitive Neuroscience
• Psycholinguistics
• Clinical Psychology

Background:

• Schizophrenia (SZ) is associated with cognitive deficits, including attentional and working memory impairments.
• Reading comprehension in SZ patients can be affected by these cognitive challenges.
• Understanding reading processes in SZ is crucial for developing supportive interventions.

Purpose of the Study:

• To investigate how word predictability influences reading fixation durations in individuals with schizophrenia (SZ) compared to healthy controls.
• To explore the role of familiar text structures, like proverbs, in aiding reading comprehension for SZ patients.
• To assess the potential of eye-tracking metrics in evaluating reading performance enhancements in SZ.

Main Methods:

• Eye movements, specifically fixation durations, were recorded during reading tasks in 40 healthy controls and 18 SZ patients.
• Linear mixed models were employed to analyze the impact of word predictabilities (N-1, N, N+1) on fixation durations.
• Reading material included regular sentences and culturally familiar proverbs.

Main Results:

• Word predictability significantly influenced fixation durations in both healthy controls and SZ patients.
• The effect of word predictability on SZ patients' reading was less pronounced in proverbs compared to regular sentences.
• Both groups utilized predictable words to facilitate easier reading, suggesting a shared reading strategy.

Conclusions:

• SZ readers may compensate for cognitive deficits by leveraging stored information from familiar texts, like proverbs.
• Predictability cues in proverbs appear to be effectively utilized by SZ patients to enhance reading.
• Eye-tracking measures of fixation duration offer a potential tool for understanding and improving reading in SZ.