Non-experimental Quantitative Research Designs (NEQDs)

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Presentation transcript:

Non-experimental Quantitative Research Designs (NEQDs)

What Are They? A research design in which the researcher measures or observes subjects or variables without attempting to introduce a treatment.

How Could I Use NEQDs for Program Evaluation ?  Explore the relationship(s) between two or more variables or elements of a program.  Use the knowledge of two correlated variables to inform practice or program revisions and implementation.  NEQDs can require the usage of an underling theory to explain or interpret correlations.  Control variables are then employed to further rule out the effects of extraneous variables on the variables that a theory may have causally linked.

Types of NEQD Structural Equation Modeling Path Analysis, Factor Analysis Multiple Regression Simple Regression

Examples

Examples (Simple Regression)

Examples (Multiple Regression)

Examples (Multiple Regression).55.12

What if We Want More? What tools are available to analyze systems with multiple (and possible causal) relationships?

A Little More…Path Analysis

Advantages Allows for: – the study of independent variables over which the research cannot have any control. – the manipulation of variables in theory that cannot often be manipulated in practice. – the study of variables as they exist.

Disadvantages  Determining causality and/or the direction of causality.  Mutual causality  Selection bias  Spurious Correlations