allow_negative_scores

When set to true, this feature will allow questions to have negative scores, which will penalize the user by negating from the total score if the answer is incorrect.

When set (to either true or false), this flag takes precedence over the same setting in individual questions.

When omitted, the default behavior is to normalize any negative scores to zero. Individual questions can still override that behavior by specifying their own value for allow_negative_scores.