A Researcher Trains Observers to Complete Checklists While Observing Children's

question 11

Multiple Choice

A researcher trains observers to complete checklists while observing children's behavior on the schoolyard during recess.Over the course of the study,observers become more reliable in their observations.Any effect of a treatment in this study might be confounded with an ____________ threat to internal validity.

• A) observation
• B) instrumentation
• C) additive
• D) expectancy effect

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Definitions:

Canary

A bird often associated with historical coal mining practices as an early warning system for toxic gases.

Algorithms

A step-by-step procedure or set of rules to be followed in calculations or problem-solving operations, especially by a computer.

Mechanical

Pertaining to objects, machines, or systems that operate or are produced by machinery and physical parts, often contrasted with electronic or digital.

Repetitive Mathematical Procedures

Algorithms or operations that are performed repeatedly, often to solve problems or accomplish tasks in mathematics.