Podcast
Questions and Answers
What is a key characteristic of experimental research according to the text?
What is a key characteristic of experimental research according to the text?
- Conducting surveys for data collection
- Using historical data for analysis
- Providing control over extraneous variables
- Randomly assigning participants to groups (correct)
Which type of research design involves physically manipulating treatment conditions for one or more groups?
Which type of research design involves physically manipulating treatment conditions for one or more groups?
- True experimental design (correct)
- Time-series design
- Longitudinal design
- Retrospective design
What is the main difference between experimental and non-experimental designs?
What is the main difference between experimental and non-experimental designs?
- Use of historical data in experimental designs
- Random assignment of participants in non-experimental designs
- Control over extraneous variables in non-experimental designs (correct)
- Physical manipulation of treatment conditions in non-experimental designs
Which type of design involves observing and measuring variables as they naturally occur over an extended period?
Which type of design involves observing and measuring variables as they naturally occur over an extended period?
In which type of research design are relationships between variables studied without manipulation of variables?
In which type of research design are relationships between variables studied without manipulation of variables?
What is the primary focus of survey research designs?
What is the primary focus of survey research designs?
Which type of research design involves an intervention but not random assignment of participants to groups?
Which type of research design involves an intervention but not random assignment of participants to groups?
In a factorial design, the researcher tests for the interaction of how many independent variables?
In a factorial design, the researcher tests for the interaction of how many independent variables?
Which type of research design involves studying a single group and collecting more than one outcome measure?
Which type of research design involves studying a single group and collecting more than one outcome measure?
What is the main characteristic of non-experimental designs?
What is the main characteristic of non-experimental designs?
Which type of research is concerned with the current or past status of something?
Which type of research is concerned with the current or past status of something?
What is a key feature of a single-subject design?
What is a key feature of a single-subject design?
What type of research design involves the investigator identifying the sample and the population, collecting data through questionnaires or interviews, and drawing conclusions about the population?
What type of research design involves the investigator identifying the sample and the population, collecting data through questionnaires or interviews, and drawing conclusions about the population?
Which survey design is useful for assessing information at a single point in time?
Which survey design is useful for assessing information at a single point in time?
In longitudinal surveys, what do panel studies involve?
In longitudinal surveys, what do panel studies involve?
What is the primary purpose of longitudinal studies?
What is the primary purpose of longitudinal studies?
Which type of non-experimental design focuses on examining the relationships between variables without manipulating them?
Which type of non-experimental design focuses on examining the relationships between variables without manipulating them?
What distinguishes longitudinal surveys from cross-sectional surveys?
What distinguishes longitudinal surveys from cross-sectional surveys?
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Study Notes
Non-Experimental Designs
- Survey research is a form of quantitative research that involves identifying a sample and population, collecting data through questionnaires or interviews, and making inferences about the population.
- Surveys are used to assess information at one point in time.
Types of Survey Designs
- Cross-sectional design: examines attitudes, beliefs, opinions, or practices at one point in time.
- Longitudinal design: assesses changes over time with trends of a population or changes in a cohort group.
Longitudinal Design
- Longitudinal surveys assess changes over time with trends of a population or changes in a cohort group.
- Longitudinal studies are descriptive and explanatory in nature, mainly used in applied sciences.
Types of Longitudinal Designs
- Panel studies: unit of analysis followed up at certain intervals over a long period, often many years.
Non-Experimental Designs
- Non-experimental designs are used in descriptive studies, units are selected to take part in the study and measured on all relevant variables.
- Non-experimental designs lack the manipulation of an independent variable and are concerned with the current or past status of something.
Categories of Quantitative Designs
- Experimental designs: true experimental, pre-test-post test control, post-test-only control, Solomon four group, factorial design.
- Non-experimental designs: quasi-experimental, time-series, pre-experimental, one-shot case study, one group pre-test post-test.
- Non-traditional designs: survey, simple, longitudinal, developmental, comparative, correlational, retrospective, prospective, path analysis, predictive, case studies, historical, methodological, meta-analysis, secondary analysis, evaluation, needs assessment, action studies, philosophical.
Experimental Designs
- Experimental designs involve random assignment of participants to groups or units, control over extraneous variables, physical manipulation of treatment conditions, and measurement of outcomes.
- True experiments involve random assignment of participants to groups or units and are the most rigorous and controlled of all types.
Characteristics of Experimental Research
- Random assignment of participants to groups or units.
- Control over extraneous variables to isolate the effects of the independent variable on the outcomes.
- Physical manipulation of the treatment conditions for one or more groups.
- Measurement of the outcomes for the groups to determine if the experimental treatment had a different effect than the non-experimental treatment.
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