ABSTRACT
Only a handful of congenital prosopagnosia (CP) cases had been reported, so the number of cases in the review is a testament to the rapid growth of CP research. Demonstrations that neuropsychological participants have impairments in different types of tasks can be revealing, but when tasks matched for difficulty and task demands show association in some participants and dissociation in other participants, standard neuropsychological logic would suggest that the two tasks involve, at least in part, different mechanisms. The likelihood of having abnormal performance on at least one test increases with the number of tests and also depends on their correlation. The likelihood of having abnormal performance on at least one test increases with the number of tests and also depends on their correlation.
