In the example above, Young et al. designed an experiment to test the hypothesis that increased estrogen levels cause female-female attraction. Which of the following is NOT an appropriate prediction for this hypothesis? 1. Implanting a hormone pump that releases extra estrogen into the bloodstream of a female would increase her attraction to other females. 2. Surgically removing the brain region responsible for estrogen production decreases a female's attraction to other females. 3. Estrogen binds to estrogen receptors that regulate transcription of genes involved in neurotransmission. 4. Female Laysan Albatrosses paired with females have higher estrogen levels than females that are paired with males.
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