APA Dictionary of Psychology

an instrument that assesses self-confidence and physical and cognitive elements of anxiety that are associated with an immediately upcoming competition (see state anxiety). In its revised edition (CSAI–2), it consists of 27 statements (e.g., “I am concerned about performing poorly”) to which participants respond using a 4-point Likert scale, ranging from not at all to very much so. [originally developed by sport psychologist Rainer Martens (1942–  ) and colleagues]