4.3. Limitations
The study had limitations that should be considered. The realism of the grocery selection task was limited in several ways. Although the laboratory setting was designed to look similar to an aisle in a small grocery/convenience store, the setting was nevertheless a laboratory, and therefore not entirely naturalistic. Additionally, participants were constrained to choose a combination of foods that cost USD 20 or less, a constraint that may or may not accurately reflect participants’ regular grocery shopping occasions. It is possible that participants deduced, but did not report, the connection between the two studies. This understanding of the link between the video shown in Study 1 and the food selection task in Study 2 could have led participants to behave differently than they would have if this connection between the studies was undiscovered. Additionally, although the sample size of 175 parent/child pairs was comparable to other research examining the effects on food selection of FOP labels and educational materials (e.g., [