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WorksheetsExtraneous variables
Total questions: 10
Worksheet time: 6mins
The mood of the participants would be classified as
the experimenter effect
the placebo effect
a non standardised procedure
an individual participant difference
All participants completing condition 1, condition 2 and then condition 3 would be classified as
the experimenter effect
the order effect
a non standardised procedure
an individual participant difference
Half of the participants completed the maths test at 9am while the other half completed the maths test at 11pm. The most likely extraneous variable would be
the experimenter effect
the order effect
non standardised procedures
individual participant differences
All participants are given a new drug designed to improve attention. They show an improvement in focus after taking the drug , this is most likely because of
the experimenter effect.
the placebo effect.
a non standardised procedure.
an individual participant difference.
Participants are given the same instructions from either a professor, a first year lecturer or a first year university student. The most likely extraneous variable would be classified as
the experimenter effect.
the placebo effect.
a non standardised procedure.
an individual participant difference.
The varying height and weight of participants would be classified as
individual participant differences
the experimenter effect
non standardised procedure
the placebo effect
Four different experimenters will be running the experiment at four different locations across Melbourne. The extraneous variables that are most likely to occur are
individual participant differences
the experimenter effect
non standardised instructions and procedures
the placebo effect
A researcher is investigating the influence of energy drinks on speed. Participants are to complete 6 x 100m sprints over a 30 minute period. The first 3 sprints will be without the energy drink, the last 3 will be 5 minutes after consuming the drink. The most likely extraneous variable is
the order effect
the experimenter effect
non standardised instructions and procedures
the placebo effect
Participant's prior experience would be classified as
individual participant differences
the experimenter effect
non standardised procedure
the placebo effect
A researcher is investigating the influence of anti-inflammatory medication on migraine pain. He notices that the group receiving the sugar pill has reported a significant decrease in migraine pain. This is most likely due to
individual participant differences
the experimenter effect
non standardised procedure
the placebo effect
