Toby publicly agrees with his fraternity brothers that Ahmed,a senior,would make the best student senate president.On the secret ballot,however,he actually votes for Yoram.Toby's public conformity to his fraternity brothers' opinion best illustrates the power of

A) social facilitation.
B) informational social influence.
C) normative social influence.
D) the chameleon effect.

Toby's public agreement with his fraternity brothers' opinion despite his true feelings suggests he was influenced by the normative social influence, which refers to the desire to be accepted and gain approval within a group, rather than informational social influence (B), which is based on the desire to be accurate and informed. Social facilitation (A) refers to an individual's improved performance on simple tasks in the presence of others, while the chameleon effect (D) refers to the tendency to unconsciously mimic the behavior of those around us.