Baddeley and Hitch (1974)

Question 1

aim

Answer 1

the researchers aimed to investigate if there is evidence that reasoning tasks share a common workin memory system

Question 2

procedure

Answer 2

-dual task technique: oarticipants carry out two tasks at once
- participants were given digit strings to repeat while reading and memorizing text at the same time
- used articulatory supression
- One condition: participants were asked to repeat digits aloud while memorized text
- capacity of the inner voice was filled up, how human memory performs without it
- Second condition: participants has to produce a random sequence of digits aloud while memorizing teh information from the text

Question 3

results

Answer 3

• concurrent tasks decresed accuracy of recalll of the information
• first condition: recalling info from the text made use of the central executive and the digit span take made use of the phonological loop
• not significantly hindered bc the tasks used different modalities
• second condition: the participants hd to use more attentional resources bc they needed to take into account the previous digits that tehy ad selected
• impaired their ability to recal info since both tasks used the same modality

Question 4

conclusion

Answer 4

• findings suggest that STM consists of several different components which can work independantely of one another
• STM is a flexible and complex system which consists of central control mechanism assisted by a number if skave systems
• if two task interfer with each other so that one or both are impaired.