Landry and Bartling

Aim

To investigate whether articulatory suppression would influence the serial recall of a written list of phonologically dissimilar letters

What design was used in the study?

Independent measures design.

What were the two groups in the study?

Control Group and Experimental Group.

What did the Control Group do?

Viewed and recalled a list of letters without a concurrent task.

What task did the Experimental Group perform?

They performed articulatory suppression while viewing and recalling the list.

How many lists of letters were participants shown?

Ten lists of seven random letters for five seconds

What would ppts need to do after a five second wait?

Wrote the letters in the correct order

What was the mean accuracy of the Control Group?

76% mean accuracy.

What was the mean accuracy of the Experimental Group?

45% mean accuracy.

What statistical test indicated a significant difference between groups?

A t-test.

What was the p-value indicating significance in the results?

p

What does the conclusion support regarding the Working Memory Model?

It shows how the phonological loop is disrupted by articulatory suppression, preventing rehearsal and reducing recall accuracy.

What does the study suggest?

Multitasking involving verbal and phonological tasks can impair working memory performance

(+) What is one positive evaluation point of the study?

High internal validity due to high control over variables minimising the presence of extraneous variables

(-) What is one negative evaluation point regarding ecological validity?

Memorizing random letters does not represent typical everyday memory tasks.

(-) What is a limitation related to generalizability in this study?

Undergraduate psychology students may not represent the general population.