Validity and reliability testing of the transitional impact scale

The transitional impact scale (TIS) was developed to measure the quality and quantity of changes brought about by transitional events. The aim of the present study was to investigate the psychometric properties of the TIS. Study 1 investigated the validity and internal consistency of the TIS among 445 participants (aged 18-73 years) who completed the TIS, beck anxiety inventory (BAI), centrality of event scale (CES), impact of event scale-revised (IES-R), and post-traumatic growth inventory. Study 2 investigated the test-retest reliability of the TIS among 140 university students (70 female; 70 male) who completed a retest of the TIS after a 2-week interval. The two-factor structure (i.e., material change and psychological change) of the TIS proposed by Svob et al. (2014) was confirmed in different age and socioeconomic status groups of a Turkish sample. The TIS was significantly correlated with the BAI, CES, and IES-R. Finally, the TIS had a high test-retest reliability.