Sandi believes that people who eat at McDonald's are overweight,so she decides to do a naturalistic observation of people who eat at McDonald's.What should most concern us about Sandi's observations?

Question

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Sandi's observation may be biased if she already has a preconceived notion that people who eat at McDonald's are overweight. This bias can be present in her observations, leading her to selectively notice and record data that confirms her belief, while ignoring data that disconfirms it. This is known as observer bias. The observer effect refers to the phenomenon that people's behavior changes when they know they are being observed, which may or may not be a concern in this scenario. Social desirability bias refers to a tendency for people to respond in a way they perceive as socially desirable or acceptable, which is not a concern in naturalistic observation. Participant observation refers to a research method where the researcher becomes a participant in the observed group or culture and is also not relevant in this scenario.

Sandi Believes That People Who Eat at McDonald's Are Overweight,so