Evaluation:
:check: Baddely - identified 2 memory stores, later research showed that there are exceptions, which led to the development of the MSM.
:red_cross: Baddeley - artificial stimuli, no personal meaning to the Pps, when processing more meaningful information, people use semantic coding for STM, limited application.
:check: Jacobs - been replicated, old study and may have lacked adequate controls, his findings have been confirmed later in controlled studies e.g., Bopp and Verhaeghen 2005. valid measurement of STM digit span.