Scientific processes

An occupational psychologist wants to investigate whether drinking a high-caffeine energy drink affects response speeds in warehouse operators.

The psychologist uses a repeated measures design with 36 warehouse operators.

Condition A: Participants consume a 250 ml high-caffeine energy drink 30 minutes before completing a computer-simulated sorting task.
Condition B: The same participants consume a 250 ml caffeine-free placebo drink 30 minutes before completing an equivalent computer-simulated sorting task.

To control for order effects, the psychologist decides to counterbalance the participants across the two conditions.

Describe how the psychologist could counterbalance the participants across these experimental conditions.

[3]

An occupational psychologist wants to investigate whether drinking a high-caffeine energy drink affects response speeds in warehouse operators.

The psychologist uses a repeated measures design with 36 warehouse operators.

Condition A: Participants consume a 250 ml high-caffeine energy drink 30 minutes before completing a computer-simulated sorting task.
Condition B: The same participants consume a 250 ml caffeine-free placebo drink 30 minutes before completing an equivalent computer-simulated sorting task.

To control for order effects, the psychologist decides to counterbalance the participants across the two conditions.

Scientific processes

Scientific processes Questions