Align the Scientific Method with the series of trials Dr. Goldberger performed to confirm his ...

Observations: Pellagra, thought to be an infectious disease, would strike poorer people such as children in orphanages, prisoners, poor labourers but not more affluent people such as nurses and guards.

Hypothesis: Pellagra is caused by a dietary deficiency

Experiment: Fed orphans and prisoners a nutrient-rich diet instead of the corn-based diet they had been used to.

Data/Observations: The orphans and prisoners who were fed this diet recovered.

Repeat Experiment: #1: Goldberger fed 10 healthy inmates a corn-based diet and they developed pellagra. #2: Goldberger and his colleagues injected and ingested the scabs and secretions from the affected people and he and his colleagues remained healthy.

Accept Hypothesis: Pellagra is caused by a dietary deficiency.

Theory: Pellagra is caused by a dietary deficiency.