A Biopsychologist Is Interested in Studying the Effects of Marijuana

question 4

Multiple Choice

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes) to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis:

Based on the F ratio you just computed and the appropriate critical value (3.88) ,your decision would be to _______,suggesting that ______ a statistically significant effect of marijuana on the time it takes rats to complete the maze.

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Definitions:

American Law Institute (ALI) Rule

A guideline used in the legal system that includes considerations of mental illness in the determination of criminal responsibility.

Insanity Defense

A legal defense asserting that a defendant was unable to understand the nature of their actions or distinguish right from wrong due to mental illness.

American Law Institute (ALI) Rule

A legal standard used to determine insanity which includes the inability to understand the criminality of one's actions or to conform one's actions to the law due to a mental defect or disease.

M'Naghten Rule

A legal standard used to determine whether a defendant was insane at the time of committing a crime and therefore not responsible for their actions.