The mandler study, which tested the effects of categorizing items, concluded that the number of categories used to remember information has little to no effect on recall. true or false?

The statement that the Mandler study, which tested the effects of categorizing items, concluded that the number of categories used to remember information has little to no effect on recall is false. In contrast, the study conducted by the American psychologist George Mandler concluded that number of categories  has effect on recall and that information organized schematically is better recalled than the same information organized categorically.

obviously, the latter.