Laughter

question 97

Multiple Choice

Laughter

• A) reflects faster processing of information than smiling.
• B) appears around 6 to 8 months of age.
• C) first occurs in response to very gentle stimuli.
• D) occurs more often when babies are interacting with new people.

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Definitions:

Study Group

A collection of individuals brought together to participate in a research study or to collectively study a particular subject.

Null Hypothesis

A statement used in statistics that proposes there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.

Scientific Hypothesis

A testable prediction about the relationship between two or more variables, forming the basis for an experiment or observational study.

Observations

The act of watching carefully with attention to details for the purpose of gathering data.