5 terms

adoption curve

the first group to adopt new products
Early Adopters
the second group in the adoption curve to adopt a new product; these people are usually well respected by their peers and often are opinion leaders
Early Majority
group that avoids risk and waits to consider new idea until many early adopters try it and like it
Late Majority
group that is cautious about new ideas
Laggards or nonadopters
prefer to do things the way they have been done in the past and are very suspicious of new ideas