PERCEIVED STRESS, REFLEXIVITY, AND DECISION-MAKING STYLES IN STUDENTS

Item-level questionnaire data and the full analysis code for the study Perceived stress, reflexivity, and decision-making styles in students (Kazan Federal University). One hundred and thirty-eight students aged 18–25 completed the Perceived Stress Scale (ShVS-10), A. V. Karpov's reflexivity questionnaire, the Wong and Law Emotional Intelligence Scale in the author's own Russian translation, and the Melbourne Decision Making Questionnaire in T. V. Kornilova's Russian adaptation. The study tested whether the relations between these characteristics and the four decision-making styles are curvilinear or linear, and examined how far the answer depends on careless responding. The record contains three files. data_stress_reflexivity_2026.csv holds the responses in long format, one row per participant per item. stress_reflexivity_analysis.R reproduces every statistic, table and figure reported in the article, including the screen for careless responding (zero within-person variance across a whole questionnaire) and the quadratic models fitted before and after excluding the six participants it flags. README.md documents the file structure, the scoring key for each scale, and the steps needed to reproduce the results. Only participants who completed the session and consented at debriefing to the use of their responses are included. Sessions abandoned before completion, and those whose participants declined consent, have been removed. Session identifiers were random and have been replaced with sequential pseudonyms; timestamps and the free-text field naming the participant's faculty have been removed. No names or contact details were collected. Data from the same sessions relating to other parts of the wider project are reported separately and are not included here. Running the script requires R and the psych package.