Interactive video - Experiments

An experiment will test​ (a)   and effect. A psychologist will change the​ (b)   to see what effect it has on the​ (c)   .

• cause
• independent variable
• dependent variable

Which type of experiment involves the psychologist controlling all of the extraneous variables?

• Laboratory experiment

• Field experiment

• Natural experiment

What type of experiment takes places in a natural setting (you may tick more than one)?

• Laboratory experiment

• Field experiment

• Natural experiment

Which type of experiment is likely to involve a confederate?

• Laboratory experiment

• Field experiment

• Natural experiment

What type of experiment is described in the example below:

"A psychologist wants to investigate to see if playing classical music to a group of students helps them to produce more work. He carefully selects a group of students and takes them to his room after school. They sit for half an hour to complete tasks. Another group repeats the experiment but listen to classical music whilst they do the tasks. Everything else about the room and the experiment is the same"

• Laboratory experiment

• Field experiment

• Natural experiment

Which type of experiment is described below:

A psychologist is investigating if playing half a game affects how many injuries the players get compared to playing a whole game. She allows them to play games as they normally would, but then speaks to the team physio to receive information about how many injuries they have had to deal with. She then compared the injuries for each player against the length of time they played for.

• Laboratory experiment

• Field experiment

• Natural experiment

What type of experiment is described below:

"A psychologist wants to investigate how the amount of sleep somebody has affects their ability to concentrate. She asks a group of students to record how much sleep they have at night at home, then brings them into a classroom the next day to perform some concentration tests."

• Laboratory experiment

• Field experiment

• Natural experiment

The​ ​ (a)   variable is the factor the psychologist changes within the experiment. The​ (b)   variable is the what the psychologist measures during the experiment. The​ (c)   variable is what the psychologist must control so that it doesn't affect the results.

• independent
• dependent
• extraneous

Match the appropriate variables for the following experiment: 'An investigation into how much people enjoy eating different shapes of pasta'

Groups:

(a) Independent variable

,

(b) Dependent variable

,

(c) Extraneous variable

• The shape of the pasta

• How much pasta they eat

• How much people enjoy eating it

Match the appropriate variables for the following experiment: 'An investigation into whether different brands of trainer help athletes to run faster'

Groups:

(a) Independent variable

,

(b) Dependent variable

,

(c) Extraneous variable

• The brand of trainer

• What surface they run on

• How fast the athletes run