Introduction to Cognitive Psychology - Department of Psychological ...

Prof. Greg Francis 8/12/11!! Performance is betterthan the whole-reportIconic/sensory memoryprocedure because youcan focus attention onjust one row before thepercepts fade away!! Fading percepts are dueto visual persistence,which we talked aboutearlier!! We call the use of thisinformation iconicmemory!! Large capacityNumber of letters available10864200 0.2 0.4 0.6 1Delay of tone (seconds)!! The partial-reportexperiment can bemodified in severalInfant iconic memory!! Short duration Purdue UniversityPurdue Universityways!! Blaser and Kaldy(2010) modified it totest iconic memoryof infants!! 60, 6 month oldinfants!! Infants show apreference to look atthe changed object forsmall enough set sizes!! Infant iconic memory isInfant iconic memoryactually quite similar to adults!! Ask adults to report thelocation of the changed coloritem!! They do better thaninfants (who did notunderstand the ‘task’)!! Look for sharp drop inperformance as set sizeincreases!! Estimate items in memoryMasking!! Masking effects can influence iconic memory!!persistence-based memory is very brief, and iseasily destroyed by a mask!! Iconic memory is!!brief!!easily disturbed!! Adults = 5.75!! Infants = 5.0Purdue UniversityPurdue UniversityPartial report with maskingPartial report with masking!! Write down letters from the indicated row!! Write down letters from the indicated rowPurdue UniversityI J T RH V P LC G K MPurdue UniversityPSY 200: Intro. to Cognitive Psychology 4