Psychological Performance Inventory Alternative version, Adaptationin Latvian by Aleksandrs Astafičevs (2020)

The internal consistency indicators of the Psychological Performance Inventory Alternative Version (PPA–A) show adequate reliability of the Latvian-translated version. The content of the “Determination” scale characterizes athletes’ self-motivation and goal-setting skills. The “Positive cognition” scale determines athletes’ ability to control their thoughts, ward off negative emotions, and helps to focus on task performance. The content of the “Self-belief” scale characterizes athletes’ ability to maintain positive thoughts and emotions during competition. The “Visualization” scale characterizes athletes’ ability to visualize.

Brief background information on the psychometric properties of the adapted or created instrument and sample characteristics:
Internal consistency:
The internal consistency properties of the alternative version of the Psychological Performance Inventory (PPI-A) show adequate reliability of the Latvian-translated version. The total Cronbach's alpha coefficient of the PPI-A survey is α= 0.809 (n=14 statements), with an amplitude in four scales from α=0.681 to α=0.727.

Sample characteristics:
The adaptation process took place from 2018 to 2020, the sample of respondents consisted of 240 respondents (active athletes) from various sports. The average age of the respondents was 20±1.75.