Answer: Johan's phobia developed as a result of what he sees and noticed in his mother and her response to the thunder and lightening in the environment.
Explanation: Learned behavior theory talked about how our actions are as a result of response to stimuli, stimuli in this case means noticeable change in the external environment which influences response to the environment. This can then be concluded as Johan learned to respond to his surrounding lightening as a result of how people around him respond to it since he was little.