PSYB01H3 Chapter Notes - Chapter 6: Ecological Fallacy, Spurious Relationship, Demand Characteristics
Document Summary
Memory enhancement in healthy older adults using a brain plasticity based training. Control: who receives what and how much and how the experiment is conducted. Of effects that cant be held constant so they cancel out. Can help avoid primacy and recency effects. Random assignment: any extraneous influence just as likely to affect one group as another. Single factor experiment: on with one independent variable. Experimental/treatment group: receive level of independent variable that is focus of study. Can pre test and post test to see change but make sure not influenced by practice effects. Between subjects design: different groups receive different levels of iv; large number of people needed but no contamination (ex. Selecting a between or within subjects design: between subject random might not be equal prior to treatment but within subjects can have carryover effects. Extent to which procedures and methods are optimally arranged so effect of iv on dv is unambiguous; allows determination of causal relationships.
