Writers Den

Experimental
Designs Worksheet

Using the terms listed below, complete the following (fill
in the words, not the letters):

1. The ___________ group receives
   treatment in an experimental design.
2. ___________ is required in an
   experimental design.
3. A case study, or a study with very few
   participants are examples of ________________.
4. When separate groups of subjects
   receive different levels of the independent variable, this is referred to
   as _____________ design.
5. When the researcher measures a
   behavior that needs to be changed, applies therapy and measures the
   behavior again, and then removes the treatment and measures the behavior
   again, this is referred to as ______________ design.
6. When all subjects receive all levels
   of the independent variable, this is referred to as ____________ design.
7. When the researcher measures a
   behavior that needs to be changed and then applies therapy and measures
   the behavior again, this is referred to as _____________ design.
8. When the criterion outcome changes
   over time this is referred to as _______________ design.
9. When measuring several behaviors or
   several people with baseline periods of varying lengths and an independent
   variable occurs, this is referred to as a ______________ design.
10. When subjects are not randomly
    assigned and not all variables are under the control of the presenter,
    this is referred to as ______________ design.

A. Multiple
Baseline B. Small n
design C.
ABA

D. Random
Assignment E. Quasi-Experimental F. AB

G. Within
Subject H. Experimental I.
Changing Criterion

J. Between
Subject

Read the following scenarios and match each
scenario with the correct type of experimental design using the designs from
the above exercise.

1. _____ Two
   sections of the same class are studied regarding the effects of a new
   teaching method in science. One
   group received the new method of instruction, while the other group uses
   the standard, traditional method of instruction. Both classes are measured
   for achievement before and after the teaching methods are applied.

1. _____ Subjects diagnosed as having attention
   deficit disorder were tested on a concentration task after receiving a new
   therapy comprising four types of treatment: music therapy, talk therapy,
   anxiety reduction therapy and biofeedback. All subjects were tested four
   times, once after receiving one of the four types of treatment. Each
   subject was tested under eachof the four conditions of the
   independent variable

1. _____ In
   a study, one group receives one treatment of the independent variable and
   the other group receives a different treatment of the independent
   variable. Subjects were all told they were going to see a video of a
   therapist’s session after which they would rate the quality of the
   session. The groups differed in that the subjects in one group were told
   that prior evaluations indicated that the therapist was effective whereas
   subjects in the other group were told that the evaluations indicated the
   therapist was not effective. These different subjects were used for the
   two levels of the independent variable: subjects were in either the
   “effective therapist” or the “ineffective therapist”
   condition.

1. _____ To study verbal commands in canines, during week 1 the
   baseline is recorded for how many times a dog chased a cat. During week 2, dog was trained to
   respond to a stop command (treatment) when the dog chased the cat, and the
   chasing behavior was recorded.
   During week 3, the chasing behavior was recorded without the
   verbal command (treatment).

1. _____ A
   small group is measured for the amount of anxiety they experience in math
   class (baseline). They are taught a
   relaxation method and measured again to measure anxiety in math class.