CSD 094 Lecture Notes - Lecture 7: Naturalistic Observation, Observational Study, Design Of Experiments

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Methods and designs commonly used in the study of language development. A theory is observable and can be tested (an educated guess that can be tested) Proven theories allow us to gain greater understanding of ourselves and our environment o o. Beneficial for many careers: applications in the classroom, helps to identify children at risk, helps decision making of curriculum (i. e. , esl) o. How did you assign subjects to groups? (random assignment or on the basis of some characteristic?) Cross-sectional designs: different groups of different ages are studied at one point in time o. Cohort problem: a cohort is a group bonded by time and/or common life experience. We don"t know if results for one cohort generalize to another. Longitudinal designs: study same group of people over a period of time o. Allows us to look at sequences of development: weakness.

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