Controlling Variables Quiz

In a science experiment, Mia is testing how different amounts of sunlight affect the growth of her plants. However, (a)   refers to any variable other than the independent variable that could affect the dependent variable if not controlled.

A (a)   variable is one that accidentally influences both the independent and dependent variables, leading to biased results.

The issue where participants perform better or worse depending on the sequence of tasks in an experiment is called (a)   .

When participants try to guess the aim of a study and act accordingly, this is known as __________.

(a)   effects occur when the researcher's presence or expectations influence how participants behave.

Which of the following methods is used to reduce demand characteristics?

• Counterbalancing

• Single-blind design

• Randomisation

• Control group

In a study conducted by Kai, what is the purpose of counterbalancing in a repeated measures design?

• To eliminate participant variability

• To reduce order effects

• To prevent environmental issues from affecting results

• To increase sample size

In a study conducted by Scarlett, randomisation is used in an experiment to:

• Ensure every participant is treated equally

• Reduce the impact of the researcher on the results

• Avoid the social desirability effect

• Make sure the experiment happens at the same time each day

In a study conducted by Anika, she observed the screw you effect when participants were asked to recall their experiences with a specific product. Describe how this effect could impact the validity of her findings.

In a study conducted by Emma, how does a double-blind procedure help control both demand characteristics and researcher bias?