SOC101Y1 Lecture Notes - Lecture 22: Sampling Frame, Contingency Table, Krypto
Document Summary
Mar 26th lecture 22 research methods - brym. Variables are concepts that can take more than one value. Operationalization involves establishing criteria for assigning values to variables. If a measurement procedure yields consistent results, we consider it reliable. If a measurement procedure measures what it is supposed to, we consider it valid. Causality is the measurement of causes and their effects. If research findings hold in many contexts, we consider them generalizable. Validity, reliability, and generalizability may be explained by drawing an analogy between measuring a variable and firing at a bull"s-eye. In case 1, above, shots (measures) are far apart (not reliable) and far from the bull"s-eye (not valid). In case 2, shots are close to each other (reliable) but far from the bull"s-eye (not valid). In case 3, shots are close to the bull"s-eye (valid) and close to each other (reliable).
