Evalution On Research Of Capacity

Question 1

Valid study

Answer 1

Strength of Jacobs it has been replicated

May have lacked adequate controls e.g. some pp digit soan might have been underestimated because they were distracted ( confounding variables)

Despote this Jacobs study is vonfirmed bu contrilled studies e.g. Bopp.

Suggests Jacobs study is a valid test of digit span.

Question 2

Not so many chunks (research may have overestimated stm capacity)

Answer 2

Limitation of miller

Cowan reviewd ither research and concluded capacity is only 4 + or - 1 chunks.

Suggests that the lower end of millers estimate 2 items is more appropriate than 7.