In a Field Study of the Readability of Traffic Signs

question 52

Multiple Choice

In a field study of the readability of traffic signs using different type fonts, a researcher measured the distance at which professional drivers were able to read each of four different signs during daylight and nighttime driving; two of the signs used the existing font and two used a new font designed for greater visibility. In this experiment, the independent variable(s) is/are

• A) type of font and time of day.
• B) distance from which each sign could be read by the drivers.
• C) time of day only.
• D) type font only.

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Definitions:

Clause

A part of a sentence that contains its own subject and predicate, which can either stand alone as a sentence or be part of a larger sentence.

Proposition

A declarative statement that can either be true or false but not both, used as the basic building block of logic and argumentation.

Relative Clause

A part of a sentence that modifies a noun and begins with a relative pronoun, like 'who', 'which', or 'that'.

Connective

In logic and mathematics, a symbol or word used to connect statements or propositions, such as "and", "or", "if...then".