Biological Practice Questions

Question 1

Explain 2 weaknesses of fMRI scanning

Answer 1

-fMRI scanning takes place in an artificial setting which lowers ecological validity (1). This means that participants may not show natural behaviour due to the situation being different to everyday life (1).
-can’t be used on people with sensitive hearing or hearing problems as it’s very loud so would be unethical as it would cause harm

Question 2

Joel was interested in the relationship between environmental temperature and
aggression. He noted down the average temperature for his school year and recorded
the number of aggressive incidents that took place.

State a null hypothesis for this study.

Answer 2

There will be no relationship between average
temperature (in degrees Celsius) and the number of
aggressive incidents. Any relationship will be due to
chance. (2)