A researcher studied the influence of intensity of room illumination (low, mediu

Question

A researcher studied the influence of intensity of room illumination (low, medium, and high) on reading speed among fifth graders. Also, children were classified as “good” or “poor” readers from achievement test scores. Each group of children read 750-word passages under all three levels of illumination (three reading trials). The order of trials for each child was randomly determined.

1. Identify the design (e.g., 2 X 2 factorial).

2. Identify the total number of conditions.

3. Identify the manipulated variable(s).

4. Is this an IV X PV design? If so, identify the participant variable(s).

5. Is this a repeated measures design? If so, identify the repeated variable(s).

6. Identify the dependent variable(s).

Explanation / Answer

1. Identify the design (e.g., 2 X 2 factorial).

Here the design is 2 x 3 factorial design.

2. Identify the total number of conditions.

Total number of conditions here are 6.

3. Identify the manipulated variable(s).

Here manipulated variable is the reading speed of children of fifth grades.

4. Is this an IV X PV design? If so, identify the participant variable(s).

Yes, it is an IV X PV design

participant variable is the achievement score levels of fifth graders.

5. Is this a repeated measures design? If so, identify the repeated variable(s).

Yes it is repeated measures design where repeated vairable is the intensity of room illumination.

6. Identify the dependent variable(s).

Here dependent variables are the reading speed of the fifth graders at different level of illuminations alonwith the level of their achivement test scores.

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