Misc

Question 1

What is a ‘null hypothesis’?

Answer 1

The prediction in an experiment or study that there is no significant difference between specified groups or no significant relationship between two measured phenomena

Question 2

What are ‘extraneous variables’?

Answer 2

Variables that are present in an experimental study which are not the variables under investigation or being measured

Question 3

What are ‘confounding variables’?

Answer 3

Extraneous variables in experiments that may affect the dependent variable, such that clear conclusions about the relationship between the dependent and independent variables cannot be drawn

Question 4

What is a ‘multiple baseline study’?

Answer 4

A method of evaluating an intervention where individuals are observed before starting the intervention for differing lenghts of time

Question 5

What is a ‘randomised controlled trial’?

Answer 5

A systematic evaluation of a treatment or intervention where participants are assigned randomly to intervention and control (‘no treatment’ or ‘treatment as usual’ groups)

Question 6

What is a ‘pilot study’?

Answer 6

A preliminary study or experiment involving a small group of participants to assess intitial results, the feasibility of the study, and any adverse effects