The Interview Schedule for Social Interaction (ISSI) measures the availability and perceived adequacy of social relationships. Psychosocial functioning is considered to have a strong relationship with one’s social environment, and this measure assists in assessing these social relationships. The following subscores can be calculated from this measure: the Availability of Attachment (AVAT), the Adequacy of Attachment (ADAT), the Availability of Social Integration (AVSI), and the Adequacy of Social Integration (ADSI).
Measures Registry
Interview Schedule for Social Interaction (ISSI)
Description
Purpose
The ISSI was created to provide a valid and reliable method of assessing social relationships. It was constructed to assess a respondent's perceived availability and adequacy of social relationships.
Population
Adults with psychiatric diagnoses
Year of Publication
1980
Reference
Source Article:
Henderson, S., Duncan-Jones, P., Byrne, D. G., & Scott, R. (1980). Measuring social relationships: The Interview Schedule for Social Interaction. Psychological Medicine, 10(4), 723-734. https://doi.org/10.1017/s003329170005501x
Analytics Article:
Eklund, M., Bengtsson-Tops, A., & Lindstedt, H. (2007). Construct and discriminant validity and dimensionality of the Interview Schedule for Social Interaction (ISSI) in three psychiatric samples. Nordic Journal of Psychiatry, 61(3), 182-188. https://doi.org/10.1080/08039480701352439
Number of Items
52
Scale Types (Likert=Likert Type; MC=Multiple Choice; T/F=True/False; OR=Open Response)
Likert Type
Likert: The wording of the response changes depending on the item (e.g., 1 = About right, 2 = Depends on the situation, 3 = More, 9 = Not applicable)
Subscales
Availability of Attachment (AVAT)
Adequacy of Attachment (ADAT)
Availability of Social Integration (AVSI)
Adequacy of Social Integration (ADSI)
Scoring
To score the ISSI, the individual items assigned to each subscale are dichotomized (given a score of 0 or 1 for each item) and then summed. This results in a total score for each subscale.
Administration
Self-Administered
Readability/ Literacy Level
N/A
Reliability
Internal consistency coefficients for the subscales of the ISSI ranged from 0.37 to 0.79. Additional information can be found in Table 4 of the source article.
Test-retest reliability coefficients for the subscales of the ISSI ranged from 0.51 to 0.79. Additional information can be found in Table 4 of the source article.
Product-moment correlations were used to measure stability over different periods of time (4 months, 8 months, and 12 months) for the subscales of the ISSI. These correlations ranged from 0.66 to 0.88. Additional information can be found in Table 5 of the source article. Overall, these values demonstrated moderate to strong reliability of the ISSI.
Validity
In the source article, construct validity was measured by calculating product-moment correlations of the ISSI with personality dimensions measured by the Eysenck Personality Inventory (EPI). The subscales of the ISSI were slightly correlated with the extraversion trait measured by the EPI and slightly negatively correlated with the neuroticism trait measured by the EPI, supporting the researchers' hypotheses about the relationship between social interaction and these constructs. Additional information can be found in Table 6 of the source article.
The construct validity of the ISSI was further assessed by comparing it to the Manchester Short Assessment of Quality of Life (MANSA) and the Lancashire Quality of Life Profile (LQLP). Specific correlations between the subscales of the ISSI and the subscales of these two measures, that overall demonstrated moderate construct validity, can be found in Table 2 of the analytics article (Eklund et al., 2007).
Limitations
N/A
Availability
Publicly Available
Cost
Free
Other Considerations
N/A