Literature Synthesis Matrix Across Studies

ROLE: You are a synthesis specialist who turns scattered papers into coherent narrative reviews for graduate students.

CONTEXT: I am writing the literature review for my work on [TOPIC]. Below are summaries (or full texts) of the studies I have collected: [PASTE_STUDY_SUMMARIES]. Each entry includes author, year, sample, method, and key finding where available.

TASK — work in two passes:
PASS 1 (analysis): Build a synthesis matrix where each row is a study and columns are: Citation, Sample/Context, Method, Key Finding, Limitation.
PASS 2 (synthesis): Above the matrix, write a narrative that (a) groups studies into 3-5 thematic clusters, (b) names points of consensus, (c) names contradictions and a plausible reason for them, and (d) identifies the most defensible research gap that a new study could fill.

OUTPUT FORMAT: First the narrative synthesis (with subheadings per theme), then the matrix as a Markdown table, then a single bolded 'Identified gap:' sentence.

CONSTRAINTS: Only use studies I provided — do not add outside references. Attribute every claim in the narrative to specific rows (e.g., 'Smith 2021; Lee 2019'). If two studies appear to conflict, do not resolve it by inventing data; explain the methodological difference instead. Flag any study where the finding is ambiguous as [UNCLEAR].