TYPES OF QUANTITATIVE RESEARCH || PRACTICAL RESEARCH 2

Summary

This educational video delves into quantitative research, distinguishing between non-experimental and experimental types. Non-experimental encompasses descriptive and correlational research, focusing on situational descriptions and variable relationships without intervention. Experimental research, in contrast, manipulates variables to establish cause and effect, with true and quasi-experimental designs offering varying levels of internal validity. The lesson provides examples to illustrate each type, aiming to clarify the research landscape for students.

Takeaways

• 📚 Quantitative research is divided into non-experimental and experimental types.
• 🔍 Non-experimental research includes descriptive and correlational research, focusing on describing phenomena or relationships without intervention.
• 🔬 Descriptive research aims to describe the characteristics of populations or phenomena without manipulating variables or seeking cause and effect.
• 📊 Correlational research investigates the nature of relationships between variables without necessarily exploring the underlying causes.
• 📈 Positive correlation indicates that as one variable increases, the other also increases, while negative correlation shows an opposite trend.
• 🧐 Experimental research is designed to establish causal relationships with high validity through hypothesis testing and statistical analysis.
• 🎯 True experimental research is characterized by random group formation, manipulation of treatments, and testing cause and effect relationships.
• 📝 One group post-test design in experimental research measures a single group's dependent variable after an intervention.
• 📉 Two groups post-test design compares an experimental group with a control group after an intervention.
• 🔄 Pre-test post-test design involves both experimental and control groups, with measurements taken before and after an intervention.
• 🌐 Quasi-experimental research is similar to true experimental design but lacks random assignment of subjects to conditions.

Q & A

What are the two main classifications of quantitative research?

The two main classifications of quantitative research are non-experimental and experimental research.

What type of research is characterized by describing a situation or phenomenon without interference?

Non-experimental research is characterized by describing a situation or phenomenon without any interference from the researcher.

What are the two major kinds of non-experimental research mentioned in the script?

The two major kinds of non-experimental research mentioned are descriptive research and correlational research.

How does descriptive research differ from experimental research in terms of variable manipulation?

Descriptive research does not involve manipulation of variables or searching for cause and effect relationships, unlike experimental research.

What is the purpose of descriptive research in the context of the script?

The purpose of descriptive research is to describe the nature, characteristics, and components of populations or phenomena, and to determine the frequency and general attributes of the currently existing situation.

Can you provide an example of a situation where descriptive research might be used, as mentioned in the script?

An example of when descriptive research might be used is to find out how many senior high school students spend time playing online games, or how healthy the food served during lunchtime in public schools is.

What is the main focus of correlational research?

The main focus of correlational research is to investigate the nature of relationships or associations between variables without necessarily investigating the causal reasons underlying them.

What are the two types of correlation mentioned in the script?

The two types of correlation mentioned in the script are positive correlation and negative correlation.

How does experimental research differ from non-experimental research in terms of intervention?

Experimental research involves making changes or introducing treatments, which is a form of intervention, unlike non-experimental research where there is no intervention.

What are the three characteristics that identify true experimental research?

The three characteristics that identify true experimental research are randomly formed groups, manipulation of the treatment, and the main purpose of testing the true cause and effect relationship of variables.

What is the main difference between true experimental research and quasi-experimental research?

The main difference between true experimental research and quasi-experimental research is the absence of random assignment of subjects to conditions in quasi-experimental research.

How does the script suggest that one might measure the strength of the relationship between two variables?

The script suggests that one can measure the strength of the relationship between two variables through correlational research.