The Following Paragraph Describes an Actual Study

question 1

Essay

The following paragraph describes an actual study. After reading the description, determine whether the study is an observational study or an experiment. Justify your answer with specific references to the information in the study. "We compared paired daytime and night counts of wild brook trout, brown trout, and rainbow trout made by the same snorkelers in five streams during August 1994. Overall, we counted 109 trout in the daytime and 333 trout at night. We speculate that trout counted at night were present during the daytime but were hidden from view. Biologists should consider that trout behavior and susceptibility to being seen might vary a great deal between daytime and night, even during summer. In some streams, the majority of trout may not be seen during the daytime."

Recognize the replacement of certain reflexes by voluntary actions as a child develops.

Understand the dynamic systems view of motor development and its contrast with genetic maturation theories.

Recognize reflexes that demonstrate the infant's built-in reactions to stimuli.

Determine the permanence and temporary nature of infant reflexes.

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Definitions:

Functional

Describes something that is designed to be practical and useful rather than just attractive.

Challenges Faced

Difficult situations or obstacles that individuals or groups encounter which require effort and determination to overcome.

Geographic

Relating to the physical features, location, or characteristics of the earth or its environment.

Tay-Sachs Disease

A genetic disorder caused by the absence of a specific enzyme, leading to the accumulation of fatty substances in the brain and nervous system, resulting in deterioration and death.