Harrison et al. are conducting a study assessing the ability of depressed versus non-depressed participants to remember negative emotions in a short story about a family whose car breaks down. they plan to ask participants to read the story and then make a list of the emotions expressed in the story. before beginning the study, they make a list of negative emotions (e. g., sadness and anger) that they will record from the participants’ responses. in this example, negative emotions are the a. operational definition b. significant variable c. independent variable d. dependent variable

What is the difference between an observational study and an​ experiment? choose the correct answer below. a. in an​ experiment, a treatment is applied to part of a population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. b. in an​ experiment, a treatment is applied to an entire population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of an entire population but does not change existing conditions. c. in an​ experiment, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. in an observational​ study, a treatment is applied to part of a population and responses are observed. d. in an​ experiment, a researcher measures characteristics of interest of an entire population but does not change existing conditions. in an observational​ study, a treatment is applied to an entire population and responses are observed.