As a child, Blaine was attacked by a goose and subsequently developed a severe fear of waterfowl. As he got older, the fear gradually faded until it was
all but forgotten. Blaine is now in his early twenties and recently went strolling
through a park by the river where he came across a flock of geese. The geese
gave him a stare, and Blaine experienced a sudden surge of fear. Blaine's fear
response is an example of
Stimulus discrimination