Abstract

Abstract
The purpose of the study was to examine the reliability, factorial validity evidence, invariance (by gender, type of sport and competitive level) and evidence of convergent validity of the CSAI-2. The total sample consisted of 375 athletes (284 males and 91 females). For evidence of convergent validity, the sample consisted of 163 athletes (115 males and 48 females). The athletes responded to the instruments (CSAI-2 and reduced version of the State Trait Anxiety Inventory - STAI) an hour before starting competitions. The results showed reliability (alpha > .70) and good indices of fit (CFI = .959, GFI = .942 and RMSEA = .044) for the reduced model of 17 items (CSAI-2R). The invariance and the evidence of convergent validity were supported. The Brazilian reduced version of CSAI-2 showed good psychometric properties, supporting its use in Brazilian athletes.

Abstract
Presence is often used to evaluate Virtual Reality (VR) applications. However, the raw scores are hard to interpret and need to be compared to other data to be meaningful. This paper leverages a database of 1909 responses to the Igroup Presence Questionnaire (IPQ) in different contexts to put forward a scale that qualitatively interprets raw Presence scores for VR experiences. The qualitative grading encompasses the acceptability dimension and analogous academic grading scales ranging from A to F and the adjective of such scores in a scale from Excellent to Unacceptable. Furthermore, the qualitative grading system encompasses Presence and its subscales Spatial Presence, Involvement, and Experienced Realism as defined by the IPQ. Adopting this grading system, supported by a robust dataset of Presence scores, enables practitioners to evaluate and interpret individual IPQ scores, allowing them to gain insights regarding the evaluated applications' effectiveness.