Controlled AI Support in Literature Review Writing: Questionnaire, Codebook, Linguistic Marker List, and Aggregate Results

This record contains public supplementary research materials and aggregate results for the study “Controlled AI Support in Literature Review Writing: Student Perceptions, Textual Features, and Ethical Awareness.” The study examined students’ perceptions and written outputs in two brief source-based literature review writing tasks: one completed without AI support and one completed with controlled AI support. The deposited materials include the structured questionnaire, thematic codebook, thematic frequency table, linguistic marker list, aggregate AI-support results, paired comparison results for non-AI and AI-supported writing conditions, academic-level change-score results, and aggregate linguistic paired comparison results. These materials document the instruments, coding structure, linguistic and rhetorical marker categories, and summary-level outputs used to interpret the findings. Participant-level data, full open-ended responses, student-written paragraphs, raw writing samples, coding matrices, and paragraph-level linguistic feature counts are not included in this public record because they contain student-written responses and may carry a risk of indirect identification. The public materials are provided to support research transparency, interpretation of the reported results, methodological comparison, and further research on controlled AI integration in academic writing instruction.