What makes a posttest only design a between subjects design?
a. It has repeated measures.
b. It uses a filler task as a control.
c. Different participants are assigned to the treatment and control conditions.
d. It makes use of a one-tailed hypothesis.
If you were manipulating the type of scenario (story) read by participants before performing a memory task, what task would be appropriate for the control group? They should
a. read an equivalent story, but one that lacked the critical feature of the experimental story
b. read exactly the same story as the experimental participants read
c. take a placebo
d. do nothing during this phase of the experiment
In the posttest only design, _____.
a. the control and treatment participants are the same people
b. the dependent variable is measured only once, after the treatment has been presented
c. the control group performs a different task than the experimental group does
d. all of these are true
What serves as the control for all other factors besides the manipulation of the independent variable?
a. the experimental setting c. the control group
b. the experimental group d. all of these
Z scores that have a positive value _____.
a. are above the mean c. are above the mode
b. are above the median d. none of these
The mean has a z score equal to
a. negative one c. one hundred
b. positive one d. zero
Z scores are also known as _____ scores.
a. raw c. standard
b. exact d. relative
The Greek letters and are used to represent _____ values.
a. population c. extreme
b. sample d. raw score
The standard error of the mean can be defined as the standard deviation divided by the _____.
a. square root of the variance c. square root of n - 1
b. square root of n d. none of these
This measure of variability is shown as a vertical line atop the bars on a bar graph.
a. variance c. standard error of the mean
b. standard deviation d. all of these
Quick Reply
