In 2011, none of jarrod’s friends owned a north face jacket and jarrod did not have a strong preference for north face jackets. in 2012, many of jarrod’s friends owned a north face jacket, and jarrod did have a strong preference for north face jackets. the change in jarrod’s preferences from 2011 to 2012 can be best explained by the effect.

bandwagon

Explanation:

Bandwagon effect -

It is the psychological method by which people tries to copy or do the same work , just by looking other people doing the same , regardless of their own thinking , behaviours and beliefs , is known as bandwagon effect .

It is also known as herd mentality , which simply means , copying things of that other people are doing , this phenomena is observed during the bull markets .

Hence , from the given example in the question , the correct term is bandwagon effect .

an online clothing brand

explanation: