CorrKey

Name of a key or key definition which represents the correct key(s). The correct key usually depends on the treatment and thus will be a variable argument whose values are defined in the block definition.

A classification cannot be performed if no response was recorded at all. In this case, the CorrKey-classification is derived from the CorrN-classification. If it was correct to press no key (see CorrN argument), the key will be classified as correct even if no response is recorded.