PSYC 314 Lecture Notes - Lecture 5: Teaspoon, Confounding, Trans Fat
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Seasonal opportunities affect exercise plan, age-related changes in metabolism, he might be experiencing different stressors. It would be difficult to control for genetics, athletics, metabolic discrepancies, exercise, that diet was suited to his genetic makeup. It"s not feasible or affordable for the majority of the population to consume that much protein and high quality food, access to services/measurements/analyses to most people not practical. Validity = measuring what you intend to measure; degree to which a measure accurately reflects the real world. Internal validity = confidence in causal status of independent variable. Confounding variable: the diet was right for his genes. Who (2014): recommends limiting free sugars (processed, added) to less than 5% of daily caloric intake (6 teaspoons). Had previously recommended a 10% rule (13 tsp) in 2004. According to statistics canada, the average canadian consumes 26 tsp of sugar per day (39 grams).
