When determining the prevalence of anxiety disorders among sexes, some studies have not considered ________ life expectancies.

Researchers showed participants a photo of their loved one

and asked them to think about a pleasurable event that had occurred when they were together. As a control, they were shown a photo of a neutral person and asked to think about pleasurable events with that person. When viewing the loved one and thinking about pleasant interactions with them, regions of the brain that are rich in _______ were activated. a. AcH receptors b. dopamine receptors c. gabba receptors d. GAMA receptors

Describe the directionality problem and explain how researchers attempt to avoid this problem in an experiment

What will be an ideal response?