Pupil is the opening in the center of the iris through which light enters; opening at the eye through which light passes.

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Cornea at psychology-glossary.com■■■■
Cornea is defined as the transparent focusing element of the eye that is the first structure through . . . Read More
Iris at psychology-glossary.com■■■
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Lens at psychology-glossary.com■■■
Lens is the transparent focusing element of the eye through which light passes after passing through . . . Read More
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The Standard deviation refers to a measure which shows the average variability in population from the . . . Read More
study at psychology-glossary.com■■
In general the term Study refers to a systematic observation of something or somebody (observational . . . Read More
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Average refers to the number derived by adding up all the test scores and dividing the total by the number . . . Read More
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Commercial achievement tests refers to a typically norm-referenced test that compares a pupil's score . . . Read More
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Curriculum is defined as the skills, performances, attitudes , and values pupils are expected to learn . . . Read More
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Difficulty index Indicates refers to the proportion or percentage of pupils who answered a test item . . . Read More