Italian Transitional Impact Scale validation: exploring factor structure in past and future transitional events

The Transitional Impact Scale (TIS) serves as a metric to quantify the magnitude and quality of changes resulting from transitional occurrences. This study aimed to validate the Italian translation of the TIS and juxtapose its factorial configuration with an analogous form tailored for future events. A cohort of 144 participants (mean age = 22.75; Male = 45) underwent administration of the Italian version of the TIS, concurrently providing narratives on past and future transitional events. Furthermore, each transitional event underwent evaluation based on criteria aligned with the characterization of Self-Defining Memories. Two preliminary Confirmatory Factor Analyses were conducted. Findings corroborated an identical factor structure in the Italian translation of the TIS concerning past events, yet this structure did not align with future transitional occurrences. Nonetheless, both past and future events, when appraised using the TIS, met the criteria required for classification as Self-Defining Memories. These results shed light on the divergent factorial structure of the TIS between past and future events while affirming their qualification as Self-Defining Memories.