A researcher investigates whether putting a phone in another room affects memory for a list of 20 words. Forty volunteers are randomly allocated to either k...
Question 1 Report
A researcher investigates whether putting a phone in another room affects memory for a list of 20 words. Forty volunteers are randomly allocated to either keep their phone beside them or place it outside the room.
(a) Name the independent variable in this experiment. [1]
(b) Name the dependent variable. [1]
(c) Explain one reason why random allocation is used. [2]
(d) Describe one variable, apart from phone location, that should be controlled. [2]
Answer Details
(a) Phone location during learning: beside participant or outside the room [1] (b) Number of words correctly recalled / memory score out of 20 [1] (c) It gives each participant an equal chance of being in either condition [1] and reduces participant differences between conditions / improves validity [1] (d) Any one control variable described: same word list for all participants [1] and same presentation time / order / testing room / instructions / delay before recall [1]
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