quasi experiments
type: Concept
definition: Quasi experiments, like all experiments, manipulate treatments to discover causal effects (quasi experiments are sometimes referred to as nonrandomized experiments or observational studies). However, these experiments differ from randomized experiments in that units are not randomly assigned to conditions. [Source: Encyclopedia of Epidemiology; Quasi Experiments]
broader: statistics and research methods

statistics and research methods
type: Concept
narrower: quasi experiments

methods
type: Collection
type: ConceptGroup
member: quasi experiments