An attribution after one late arrival

In an original fictional lesson, a student called Noah arrives late to a group activity. An observer immediatelycalls him careless and unmotivated. The observer alreadyknows that a transport strike has delayed many students that morning, but does not consider this information. Later anotherstudent says that the strike proves Noah can never be responsible for lateness in any future situation. The teacher asks for a social-perception analysis rather than a diagnosis or a claim about a realperson's character. The exercise supplies only one arrival, one known situational factor and two interpretations. Students should explain the fundamental attribution error, distinguish a plausible contextual explanation from a universal excuse and identify what information would be needed for a more careful account of the particular event. No clinical label or disciplinary decision is required.