Self-Disclosure Index

Self-disclosure index (SDI) was developed by (Miller et al., J Personal Soc Psychol 44:1234–1244, 1983) to measure the tendency to disclose to an acquaintance. The scale was developed as a target-specific measure, where the stem (refer to a target individual) could be modified. The scale consists of 10 items asking participants to indicate the possibility of disclosing information about themselves to the target individual (e.g., “My worst fears”; Things I wouldn’t do in public). For each relationship type, the scale can be modified as “I’m willing to talk about [the item] with [the target person]”. In the present study, we tested the scale’s validity for two targets—young adults’ self-disclosure to mothers and fathers. We conducted Confirmatory Factor Analysis (CFA) using a sample of young adults from India aged 18–25 (N = 608; Male = 192; Female = 416). We ran CFA, loading all ten items on a single factor, separately for the mother and father. The results showed that the single-factor model of the self-disclosure scale for both mother and father fit the data well (χ2 mother (33) = 162.820; p < 0.001; CFI = 0.962; RMSEA = 0.081; SRMR = 0.0362; χ2father (33) = 235.357; p < 0.001; CFI = 0.953; RMSEA = 0.101; SRMR = 0.0390). Both mother and father items showed good internal consistency. The internal consistency (Alpha mother = 0.92; Alpha father = 0.94) values. This chapter will also discuss the results of convergent validity and measurement invariance across gender.