A Common Memory Task Is the Classification of Objects into Categories

question 32

Essay

A common memory task is the classification of objects into categories. For example, a table is a piece of furniture; a dog is an animal, etc. This classification capability was used in a recent study of divided attention. College Psychology students were randomly selected and randomly assigned to one of two experimental conditions: divided attention and no divided attention. Students in the "divided attention" group were asked to memorize a list of 36 words while simultaneously listening to a tape recorder; students in a control group were told to memorize a list of 36 words and did not listen to a tape recorder. Each student was then asked to classify the 36 words into 6 categories. (There were 6 words in each category.) The distributions of the correct number of recalled words / category were approximately normal in each of the groups, and a summary of the data for the words/category recalled are presented below: ​
a) Is there evidence that the memory performance differs in the two groups? Test the appropriate hypothesis using α = 0.05.
b) One possible implication of this study is that high school students should not be dividing their attention by listening to music while studying. What results, if any, of this study would support the contention that students should not be dividing their attention?

Understand the regulation of gene expression in prokaryotes, including the concepts of inducible and repressible operons.

Comprehend the role of regulatory regions and proteins in gene expression and how mutations can affect gene function.

Recognize the different components and organization of an operon.

Distinguish between positive and negative control mechanisms in gene regulation.

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Definitions:

Intermittent Suction

A method of applying suction for a short period of time to clear secretions from airways or surgical sites, often used in medical settings.

Auscultating Bowel Sounds

The process of listening to the sounds of the intestine with a stethoscope as part of a medical examination to check for normal or abnormal digestive activity.

Myopia

A common eye condition characterized by difficulty seeing distant objects clearly, also known as nearsightedness.

Hyperopia

A common vision condition, also known as farsightedness, where distant objects can be seen more clearly than those that are near.