PsyCoMark @ SemEval 2026

Psycholinguistic Conspiracy Marker Extraction and Detection

Task Overview

The PsyCoMark task is divided into two synergistic subtasks designed to promote generalizable, interpretable models for conspiracy theory detection.

Subtask 1: Conspiracy Marker Extraction

Identify spans of text that express core conspiracy markers grounded in evolutionary psychology. Each document may include zero or multiple overlapping spans. Evaluation will use an overlap-based macro F1-score for each marker.

Subtask 2: Conspiracy Detection

Classify Reddit comments as either conspiracy-related or not conspiracy-related. The task is designed to benefit from the extracted markers but can be approached independently. Performance will be evaluated using macro-averaged F1-score.

Participants are encouraged (but not required) to build joint models for both subtasks.


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