A stressor is any event, experience, or environmental stimulus that causes stress in an individual.

If a person is in a positive mood then one feels he has ample resources to react to environmental stimulus.

In the first explanation there is too little attention paid to the role of the child as the mediator between environmental stimuli and language use.

This mechanism prepares the individual for coping with environmental stimuli.

Emotions developed in human history make organisms to react to environmental stimuli and challenges.

Like body temperature, rage can be a normal response to certain environmental stimuli or a sign of serious underlying disease.

You've been tripped up by some combination of environmental and social stimuli.

They remain in the dry pool bed until rains and other environmental stimuli hatch them.

As generations pass, less environmental stimuli is needed for organisms of the species to develop that trait.

For example, if the environmental stimulus evokes the response, the tact would be considered pure.