In pavlov’s work with dogs, the psychic secretions were
unconditioned responses
conditioned responses
unconditioned stimuli
conditioned stimuli

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

Which effect does an increase in a country’s literacy rate have on the people who live there?

Which at first gave the south an edge in the civil war? a. a better-equipped army b. the invention of ironclad ships c. the drafting of slaves into the army