AIGC Exam Policy

Large Volume T/F Exams Policy:There is no penalty for incorrect answers. Please guess if you are unsure and review the AI assisted exam result analysis for the second optional exam."

• High Content Coverage: They allow instructors to sample a wide area of knowledge in a short time, covering 1–3 questions per minute.
• Correct Grade: They are easily scored, often electronically, making them ideal for large number of questions.
• Effective for Knowledge Check: They are useful for measuring recall of facts, definitions, and identifying popular misconceptions.
• Reduces Guessing Probability: While a single question has a 50% chance of being guessed, a large-volume exam reduces the probability of a high passing score through pure chance.
• Supports Retention: When combined with instant feedback, T/F quizzes can enhance long-term retention of material compared to passive studying.
• High Guessing Factor (50-50): is removed by introduction Negative Marking to offset the 50% guessing factor.
• Cognitive Tasks: are not considered as the process of exam performance reflects knowledge retrieval. Cognitive enhencement comes from efficient learning process.
• Feedback Limitations: are removed by process without including "tricky" wording that confuses knowledgeable students.

Method of Negative Marking to offset the 50% guessing factor.

To offset the 50% guessing factor in large-volume true/false (T/F) exams, instructors often use Negative Marking.

Negative Marking (Correction for Guessing)

This is the most common technique for discouraging blind guessing. Instead of just awarding points for correct answers, student penalize incorrect ones.

• The "Standard" Formula : To make the expected value of a random guess zero, the penalty for a wrong answer should be 1 / (n - 1), where n is the number of options.
• For T/F (n=2): A wrong answer is penalized -1 point for every +1 point awarded for a correct answer.
• The "Half-Penalty" Approach : AIGC uses a milder -0.1 point penalty for wrong answers (with +0.2 for correct). This reduces student anxiety while still making "leaving it blank" a safer strategy than guessing if they are completely unsure.

Implementation Tips :

• Encourage: There is no penalty for incorrect answers. Please guess if you are unsure. Student can have a choice of second exam overriding the first exam."
• Score Clamping : Many systems "clamp" the total score at 0 so students don't end up with a negative overall grade.