1 / 16

Experimental vs. Causal-Comparative Studies

Experimental vs. Causal-Comparative Studies. Topic 3. Experimental Study. Study where treatments are given to observe their effects Treatments – input or stimulus given by the researcher Not useful when a study would be physically, ethically, legally, or financially impossible. Demographics.

baka
Download Presentation

Experimental vs. Causal-Comparative Studies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Experimental vs. Causal-Comparative Studies Topic 3

  2. Experimental Study • Study where treatments are given to observe their effects • Treatments – input or stimulus given by the researcher • Not useful when a study would be physically, ethically, legally, or financially impossible

  3. Demographics • Used to define groups in a study • People with similar background characteristics such as socioeconomic status

  4. Causal-Comparison Study • Non-experimental study • Also called ex post facto study • Characteristics of the study • Observe and describe a current condition • Look to the past to identify possible causes • No treatment given • More potential pitfalls – need to select comparison groups carefully

  5. Types of Nonexperimental Research Topic 4

  6. Nonexperimental Studies • Purpose is to observe/measure • Researcher does not try to change participants in any way • Causal-Comparative Research • Survey • Census • Case Study • Longitudinal Research • Correlational Research • Research Methods

  7. Causal-Comparative Research • Look to the past for causes of a current condition • Interested in the causality, but an experiment is not possible

  8. Survey • Also known as a poll • Describes the attitudes, beliefs and behaviors of a population • Uses a sample or portion of the population being studied • With a good sample, generalizations about the population may be drawn

  9. Census • Just like a survey, but all individuals in the population participate instead of using a sample

  10. Case Study • Usually only one participant • Often used in clinical psychology • Focus on thorough knowledge of an individual over a period of time • In-depth questioning occurs

  11. Longitudinal Research • A study over a long period of time to trace developmental trends

  12. Correlational Research • Researchers study the degree of a relationship of quantitative variables • Example: college admissions test and GPAs • “Did those with high admissions scores tend to earn high GPAs?”

  13. Research Methods • Quantitative • Qualitative • Historical

  14. Quantitative Research • Data is easy to quantify or put a number to • Allows for statistical analysis

  15. Qualitative Research • Data is gathered through open-ended interviews • Analyzed through major and minor themes in responses • Uses semi-structured interviews • Core list of questions • Deviating follow-up questions

  16. Historical Research • To understand the past • Use facts and dates to understand the dynamics of human history • Driven by theories and hypotheses • Hypotheses are evaluated using collected data • Both qualitative and quantitative methods are used • Will not be a focus of this text 

More Related