HDF 200 Lecture Notes - Lecture 2: Operational Definition, Stratified Sampling, Developmental Science

• School: URI
• Department: Human Development and Family Studies
• Course: HDF 200
• Professor: A L Y S S A F R A N C I S

Document Summary

Scientific process: acquire new knowledge, investigate questions, and modify existing knowledge. Research is the systematic process of collecting and analyzing information in order to increase our understanding of the phenomenon with which. Action research integrates the two but adds a policy component. The scientific method: problem/question, formulate a hypothesis, observation/experiment, collect and analyze results, conclusion, report the results. Sample - participants for a given research study. Generalizability- how well are the results able to applied to the intended. Population the larger group the research is aiming to address. Random sampling each person in given population has the same chance of. Stratified sampling participants are selected from subgroups. Matched group groups matched on a particular element: if given population has x males and y females, x males and y females participating in research, pulling random names from a list. Survey and tests you observe what they do in their natural environment and try to draw descriptive conclusions.