Post Hoc Tests Were Run Using the Data Below

question 4

Multiple Choice

Post hoc tests were run using the data below. Based on the output for these tests, what should the researcher conclude?

• A) The treatment group was significantly different from the post-treatment and control groups, and the post-treatment group was significantly different from the control group.
• B) The treatment group was significantly different from the control group but not the post-treatment group, and the post-treatment group was not significantly different from the control group.
• C) The treatment group was significantly different from the control group but not the post-treatment group, and the post-treatment group was significantly different from the control group.
• D) The post hoc tests are inconclusive.

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Definitions:

Rod Vision

Rod vision refers to the aspect of vision that allows living organisms to see in low light conditions, enabled by rod cells in the retina that are more light-sensitive than cone cells.

Brightness Contrast

The difference in light intensity which makes an object distinguishable from others or from its background.

Mach Bands

An optical illusion in which the contrast between edges where two different shades meet appears exaggerated.

Brightness Contrast

The difference in brightness between objects or parts of objects, which influences the perception of their visual appearance.