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Lecture 6

PSY384H5 Lecture 6: Lecture 6

2 Pages
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Department
Psychology
Course Code
PSY384H5
Professor
Elizabeth Johnson

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Lecture 6 Feb 9 2012 Question: Scientists test right or wrong Answer: Not true because you can’t test if something is wrong - Scientific theories must be falsifiable No scientific theory is ever proven to be correct in the absolute sense of the word. Theory Vs. hypothesis Theory • Usually reserved for comprehensive explanation that is built up over time based on the previous experiments Hypothesis • usually used when scientists are just beginning to explore an area • Often more narrow in scope than theories. Scientific Method • Observation theory prediction experiment revision theory • Most of the time there is no right answerwe just have evidence to prove certain things Language-specific cries in newborns • (figure 2. time waveform and narrow-band spectrograms … Mampe et al., 2009, Current Biology  & figure 1 on back of last yrs photocopy notes • Is there a problem with this statement? o Maple et al. (2009) proved that language heard while still in the womb leads French and German newborns to cry differently (both cry in a fashion that resembles their mother’s language) o Not proved just tested. **Question: What are some possible alternate explanations for Maple et al.’s results? Answer: Maybe the infants were measured before or after they ate so u were actually getting their hungry cry Experiment Vs. Exploratory study? • Exploratory study o No specific hypothesis to test o May help discover new aspects of a theory (develop new theories) o Ex. Asking different musicians to play music and just record it without any specific variable to be tested • Experiment o A specific hypothesis to be tested o Ex. Maple et al study of newborn cries Speech is characterized by: 1. Lack of invariance (no 2 segments or words are ever produced in an identical fashion twice) 2. Severe reductions in spontaneous speech. a. Ex. Should have = should’ve or “I went to the store” sounds like “I went t’the store” 3. Lack of reliable cu
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