Objective: Social cognition deficits are well known in schizophrenia
patients. This study aims to conduct the validity and reliability study
of the Turkish adaptation of the Situational Feature Recognition Test-2
(SFRT-2), which was developed to assess social knowledge, an area of
social cognition, in schizophrenia patients.
Method: In the study, 100 schizophrenia patients and 60 healthy
controls were administered the Reading the Mind in the Eyes Test,
the Hinting Task, the Facial Emotion Identification Test, the Facial
Emotion Discrimination Test and the SFRT-2. The reliability of
the test was analyzed with Intraclass Correlation Coefficient (ICC)
and Bland-Altman plots by performing a retest two days later in 16
patients. Divergent validity was examined between the composite scores
of the test and other social cognition test scores using the Spearman
correlation coefficient. Known-groups validity was evaluated with the
Mann-Whitney U test, while discriminant validity was examined using
ROC analysis.
Results: In the test-retest reliability analyses, the correlations between
the pre-test and post-test scores were found to be good and significant for
all sub-scores and composite scores (ICC=lowest 0.833-highest 0.941),
except for SFRT5 (ICC=0.634). In the divergent validity analyses,
positive correlations were found between SFRT-2 hits scores and
the Reading the Mind in the Eyes Test (rs=0.338, p<0.001), the Hinting
Task (rs=0.225, p=0.001), and the Facial Emotion Identification Test
scores (rs=0.270, p<0.001). In contrast, negative correlations were
found between SFRT-2 false positive scores and the Reading the Mind
in the Eyes Test (rs=-0.157, p=0.026) and the Hinting Task scores (rs=-
0.194, p=0.006). In ROC analysis, the area under the curve was 0.744
(95% CI 0.665-0.823, p<0.001) with 81.0% sensitivity and 61.67%
specificity.
Conclusion: The Turkish adaptation of the SFRT-2 has been shown to
be a reliable and valid instrument for assessing social knowledge deficits
in schizophrenia patients.
Keywords: Reliability and validity, schizophrenia, social perception