When Baby Rex Is Bounced Gently on His Father's Knee

question 145

Multiple Choice

When baby Rex is bounced gently on his father's knee, his father can see the skin on the top of Rex's head move up and down, sort of like the skin is covering a bowl of jello. This is because:

• A) Rex's brain has not yet solidified and is a soft mass of tissue
• B) the fontanels in Rex's head have not yet fused into bone
• C) Rex must have some sort of bone disease that has prevented his skull from forming correctly
• D) Rex probably has Down syndrome

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Definitions:

Conditioning

The process of learning through association, where a response becomes more frequent or predictable in a given environment due to reinforcement.

Salivating

The act of producing saliva in the mouth, often triggered by the anticipation of food or the presence of certain stimuli.

Laboratory Dogs

Research animals, particularly dogs, used for scientific experiments to study disease, drug effects, and other biological processes.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without any prior learning.