What is the qualitative approach to research?
A form of experimental research used to assess the relative effect of a specific intervention compared to a control condition. Patients are randomized into a control group and at least one experimental group. The control group received either no treatment or a …
What is the purpose of descriptive and explanatory research?
There are two general types of repeated-measures designs. The first type of repeated-measures design allows us to test the same participant using several levels of the same IV. Requires fewer participants, and participants can be used as their own control "group".The second general type of repeated-measures design allows us to use time as an IV.
What are the different types of research?
Randomized or true experimental design. If random assignment (R) is used, we call the design a randomized experiment or true experiment. Quasi-experimental design. If random assignment is not used, and if the design use either multiple groups or multiple waves of measurement, then we call it quasi-experimental design.
What is the purpose of a causal research design?
a good description is important and provokes the "why" questions of explanatory research explanatory research designs focus on the "why" questions ; it is one thing to describe the type of individual who develops a voice disorder; but, it is quite another to determine reasons "why" some people develop a voice disorder, and others do not
What is a posttest only design?
One Group Posttest Only Design. A type of pre experimental research design that only has one group and only does a posttest.
What is program evaluation?
Program Evaluation. A type of research concerned with the assessment of the effectiveness of a program.
What is descriptive study?
The purpose of descriptive studies is to observe, describe, and document aspects of a situation. For example, an investigator may wish to determine the percentage of teenagers who engage in risky behavior (e.g., drug use, unsafe sex)—i.e., the prevalence of such behaviors. Descriptive correlational study.
What is a cohort study?
Cohort (prospective) design. Observational studies, sometimes called a prospective design, that start with a presumed cause and then go forward to the presumed effect. Prospective studies are more costly, but much stronger, than retrospective studies. For one thing, any ambiguity about the temporal sequence of phenomena is resolved in prospective ...
What are some examples of statistical control?
Example of statistical control: Grav, Hellzen, Romild, and Stordal (2012) studied the association between social support (both emotional and tangible) and depression in a general adult population in Norway.
What is random assignment?
Random assignment is a signature of an experimental design (RCT). If subjects are not randomly assigned to intervention groups, then the design is not a true experiment. Random sampling, by contrast, refers to a method of selecting people for a study, as we discuss in Chapter 10.
What is the purpose of experimental research?
Experimental research, often called true experimentation, uses the scientific method to establish the cause-effect relationship among a group of variables that make up a study . The true experiment is often thought of as a laboratory study, but this is not always the case; a laboratory setting has nothing to do with it.
What is descriptive research?
1. Descriptive researchseeks to describe the current status of an identified variable. These research projects are designed to provide systematic information about a phenomenon. The researcher does not usually begin with an hypothesis, but is likely to develop one after collecting data.
What are some examples of narrative research?
Examples of Narrative Research: 1 A study of the experiences of an autistic student who has moved from a self-contained program to an inclusion setting 2 A study of the experiences of a high school track star who has been moved on to a championship-winning university track team
What is quantitative design?
The overall structure for a quantitative design is based in the scientific method. It uses deductive reasoning, where the researcher forms an hypothesis, collects data in an investigation of the problem, and then uses the data from the investigation, after analysis is made and conclusions are shared, to prove the hypotheses not false or false. ...
What is qualitative methodology?
Qualitative methodology is inductive in its reasoning. The researcher selects a general topic and then begins collecting information to assist in the formation of an hypothesis. The data collected during the investigation creates the hypothesis for the researcher in this research design model.
What is ethnographic research?
One specific form of ethnographic research is called a case study . It is a detailed examination of a single group, individual, situation, or site. A meta-analysis is another specific form. It is a statistical method which accumulates experimental and correlational results across independent studies.
What is constructivist approach to instruction?
The study of the nature of problems teachers encounter when they begin to use a constructivist approach to instruction after having taught using a very traditional approach for ten years. A psychological case study with extensive notes based on observations of and interviews with immigrant workers.
What is experimental research design?
3. Experimental research designs support the ability to limit alternative explanations and to infer direct causal relationships in the study.
Why is case study research design important?
The case study research design is also useful for testing whether a specific theory and model actually applies to phenomena in the real world.
What is exploratory research?
2. Exploratory research is flexible and can address research questions of all types (what, why, how). 3. Provides an opportunity to define new terms and clarify existing concepts. 4. Exploratory research is often used to generate formal hypotheses and develop more precise research problems. 5.
What is descriptive design?
Descriptive Design Definition and Purpose Descriptive research designs help provide answers to the questions of who, what, when, where, and how associated with a particular research problem; a descriptive study cannot conclusively ascertain answers to why .
What is cross sectional design?
Unlike an experimental design, where there is an active intervention by the researcher to produce and measure change or to create differences, cross-sectional designs focus on studying and drawing inferences from existing differences between people, subjects, or phenomena. 3.
What is the purpose of experimental design?
Experimental Design Definition and Purpose A blueprint of the procedure that enables the researcher to maintain control over all factors that may affect the result of an experiment. In doing this, the researcher attempts to determine or predict what may occur.
What is a protocol in psychology?
The protocol is iterative or cyclical in nature and is intended to foster deeper understanding of a given situation, starting with conceptualizing and particularizing the problem and moving through several interventions and evaluations.
