Question

experimental design practice homework #2 - due tues/wed
directions: read the following experiments and answer the questions in each box.

1. a study was created to test the effects of jazz on peoples sleep patterns. the hypothesis of the experiment was that if people listened to jazz music as they fell asleep, they would sleep for longer periods of time. for the experiment, two groups of people were created. one group was placed in a quiet room where they went to sleep and they were timed on how long they slept. the other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. as each group awoke, their sleep times were monitored.

dependent variable:
independent variable:
1 experimental constant:
experimental group:
control group:

Explanation:

The dependent variable is what is being measured and affected by the independent variable. Here, it's sleep - time. The independent variable is the factor that is changed or manipulated, which is the presence or absence of jazz music. An experimental constant is something that stays the same for both groups, like the quiet room. The experimental group is the one exposed to the variable being tested (jazz music), and the control group is the one without the variable (no jazz music).

Answer:

Dependent Variable: Duration of sleep
Independent Variable: Presence or absence of jazz music
1 Experimental Constant: Quiet room environment
Experimental Group: Group that listens to jazz music while sleeping
Control Group: Group that sleeps in a quiet room without jazz music