PSY100H1 Chapter Notes - Chapter 2: Functional Magnetic Resonance Imaging, Inter-Rater Reliability, Ecological Validity
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PSY100H1 Full Course Notes
Verified Note
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Document Summary
Five characteristics of quality scientific research: based on objective, valid, and reliable measurements, can be generalized, uses techniques that reduce bias, made public, can be replicated. Objective measurements: the measure of an entity or behavior that, within an allowed margin or error, is consistent across instruments and observers. Variable: the object, concept or event being measured. techniques: Fmri: functional magnetic resonance imaging ( active) Gathering samples of blood/saliva, analyze the enzymes, hormones, etc. Operational definitions: statements that describe the procedures (or operations) and specific measures that are used to record observations. Validity: the degree to which an instrument or procedure actually measured what it claims to measure. Reliability: demonstrated when a measure provides consistent and stable answers across multiple observations and points in time. Test-retest reliability: examines whether scores on a given measure of behavior are consistent across test sessions. Alternate-forms reliability: examines whether diff. forms of the same test produce the same results.
