Threats to internal validity include
Testing, maturation, procedural infidelity
Events that occur during the experiment but that are not related to planned procedural
changes that may influence the outcomes.
History
Changes in behavior due to the passage of time
Maturation
Occurs when pa...
aggressive behaviors (i.e., biting others). She has collected data for the frequency of Jerrell's
bites for three weeks. Calculate the mean, median, and mode of the following data set
(round to the nearest whole number):
Week 1: 22, 31, 20, 32, 32
Week 2: 7, 8, 13, 31, 17
Week 3: 16, 5, 9, 12, 15
✓ Mean = 18, median =16, Mode =31,32
Dr. Jones wanted to know if the use of the Good Behavior Game decreased rates of
disruptive behaviors in an elementary school. Dr. Jones collected data throughout the
duration of the school year across two elementary schools. In school A, all k-6 classrooms
used the Good Behavior Game. In School B, no classrooms used the Good Behavior Game.
At the end of the school year, Dr. Jones shouted, "Eureka! The Good Behavior Game
works," when in fact it had no impact on student disruptive behavior. This is an example of:
✓ A type II error
The primary purpose of the method section is to:
✓ Both A and B
Detail the plan of study being proposed.
1 | P a g e | G r a d e A + | 2 0 0 2 5
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