The discussion centers on the definition and identification of dependent variables in experiments, which are influenced by independent variables. Participants clarify that the dependent variable is the one being tested or changed by the experimenter. There is confusion over the correct spelling of "dependent," with some participants mistakenly using "dependant." The conversation also touches on the term "explanatory variable," although it is noted that this term does not fit the context. Ultimately, the correct term is confirmed to be "dependent."