Does your nose grow when

you tell a lie?

“A theory of deception in interpersonal communication that bases its predictions about outcomes on the characteristics of the

source, receiver, context, message, feedback, and channel.”

Interpersonal Deception Theory (IDT)

This theory can be used in..

Mass communication

Face-to-face communication

Interpersonal communication

Verbal & Nonverbal

communication

Public

The average person tells 2 lies per day.

So what?

The verdict is in..

This theory has very little

predictive power.

With the influence of new technology, such as text messaging and Facebook, our textbook

authors expect that IDT theorists

will extend previous propositions to account for these increasing media choices for

interaction.