Transforming Psychological Testing With Saccadic Responses: Internal Consistency is High for Rorschach and Facial Expressions.

This article investigates the internal consistency of eye movement measures during two psychological tasks: the Rorschach Ink Blot Test, administered via the Rorschach Performance Assessment System (R-PAS), and a facial expression recognition task using the Japanese and Caucasian Facial Expressions of Emotion and Neutral Faces (JACFEE + JACNeuf) test. Using eye tracking technology, five standard eye movement variables—Number of Fixations (NF), Fixation Duration (FD), Saccade Amplitude (SA), Initial Saccade Amplitude (ISA), and Initial Saccade Latency (ISL)—were assessed for reliability across these tasks in a sample of 60 adults. The study found that FD and SA demonstrated excellent internal consistency within and across both tasks, with higher consistency observed in the facial expression task, likely due to its lower interpretive uncertainty compared to the Rorschach. Significant positive correlations for FD and SA between the two tasks suggest these measures are stable individual difference indicators and promising candidates for augmenting psychological and neuropsychological test interpretations.