UNIT 2: PSYCHOLOGICAL RESEARCH Flashcards
Is a process used by researchers to examine whether a relationship between two or more variables exists. Psychologists regularly utilize the scientific method to find explanations for human behaviors.
The Scientific Method
Complete Six Steps of Scientific Methods
- Observation
2. Question
3. Hypothesis
4. Experiment
5. Conclusion
6. Results
Four Main Steps of Scientific Methods
- Identifying questions of interest
- Formulating an explanation
- Carrying out research designed to support or refute the explanation
- Communicating
STEPS OF SCIENTIFIC METHOD
- Behavior and phenomenon requiring explanation
- Prior Research Findings
- Curiosity, Creativity, and Insight
Identifying questions of interest
STEPS OF SCIENTIFIC METHOD
- Specify a theory
- Develop a hypothesis
Formulating an explanation
STEPS OF SCIENTIFIC METHOD
- Select a research method
- Collect the data
- Analyze the Data
Carrying out research designed to support or refute the explanation
Is defined as a system of ideas designed to interrelate concepts and facts in a way that summarizes existing data and predicts future observation
Theory
Role of Theories in Psychological Research
- To Provide a framework for studies
- To Operationalize broad explanations
- Making sure that the body of knowledge is organized
- Allowing researchers to explore ideas
Giving a clear definition and making a concept quantifiable by stating the specific actions or procedures used to measure it.
Operationalize
Steps in establishing Operationalization
- Identify existing concepts
- Develop indicators
- Design study
- Collect data
- Analyze data
- Ensure credibility
- Bridge between theory and the real world
- Is a testable prediction based on a theory or a “tentative answer”
Hypothesis
A hypothesis must be
- Testable
- Falsifiable
- Specific
- Contain at least two variables
TYPES OF VARIABLES
These are the variables that are manipulated or changed by the researcher.
Independent Variables
TYPES OF VARIABLES
These are the variables that are measured or observed to see if they change as a result of the independent variable.
Dependent Variables
TYPES OF VARIABLES
These are variables that affect the relationship between the independent and dependent variables.
Intervening Variables
TYPES OF VARIABLES
These are variables that are not of primary interest but could still influence the results of the study.
Extraneous Variables
TYPES OF VARIABLES
These are variables that are kept constant throughout the study to minimize their impact on the results.
Controlled Variables
TYPES OF VARIABLES
These are extraneous variables that can’t be controlled and that can affect the relationship between the independent and dependent variables.
Confounding Variables
- An operational definition translates a hypothesis into specific, measurable terms.
- A clear and concise explanation of how a variable or construct is measured or manipulated in a research study.
Operationalizing Hypothesis
Two Essential Components of Hypothesis
Null Hypothesis (H0)
Alternative Hypothesis (H1 or Ha)
COMPONENTS OF HYPOTHESIS
It is the statement or claim being made (which we are trying to disprove).
Null Hypothesis (H0)
COMPONENTS OF HYPOTHESIS
It is the hypothesis that we are trying to prove and which is accepted if we have sufficient evidence to reject the null hypothesis.
Alternative Hypothesis (H1 or Ha)
Importance of Hypothesis
- Guiding the Research
- Testing Theories
- Making Sense of Data
- Encouraging Future Research