Podcast
Questions and Answers
What is the main focus of Dr Rox's mock study?
What is the main focus of Dr Rox's mock study?
The main focus is on the effect of caffeine on reaction times.
What is the significance of using randomised control trials in psychological research?
What is the significance of using randomised control trials in psychological research?
Randomised control trials help minimize bias and establish causal relationships between variables.
What are the differences between one-tailed and two-tailed hypotheses?
What are the differences between one-tailed and two-tailed hypotheses?
One-tailed hypotheses predict the direction of the relationship, while two-tailed hypotheses do not specify a direction.
Why is it important to avoid using the term 'prove' in psychological research?
Why is it important to avoid using the term 'prove' in psychological research?
What is temporal validity in the context of psychological studies?
What is temporal validity in the context of psychological studies?
How can using a postal questionnaire benefit psychological research?
How can using a postal questionnaire benefit psychological research?
What role do psychometric tests play in psychology?
What role do psychometric tests play in psychology?
What is the purpose of writing null hypotheses in research?
What is the purpose of writing null hypotheses in research?
What is an independent measures design?
What is an independent measures design?
What are demand characteristics in an experiment?
What are demand characteristics in an experiment?
How does random allocation benefit an experimental design?
How does random allocation benefit an experimental design?
What is the role of the control group in an experiment?
What is the role of the control group in an experiment?
What is a potential problem of using an independent measures design?
What is a potential problem of using an independent measures design?
How could Dr. Rox have improved her independent measures experiment?
How could Dr. Rox have improved her independent measures experiment?
What are order effects, and how can they be minimized in an experiment?
What are order effects, and how can they be minimized in an experiment?
In the doodling study by Andrade, what was the main variable manipulated?
In the doodling study by Andrade, what was the main variable manipulated?
Why is it important for Dr. Rox to control variables like temperature in her study?
Why is it important for Dr. Rox to control variables like temperature in her study?
What does the term 'ecological validity' refer to in the context of laboratory experiments?
What does the term 'ecological validity' refer to in the context of laboratory experiments?
How can high levels of control in a laboratory experiment benefit researchers?
How can high levels of control in a laboratory experiment benefit researchers?
What might be a potential weakness of Dr. Rox's laboratory experiment?
What might be a potential weakness of Dr. Rox's laboratory experiment?
What is a significant challenge associated with field experiments?
What is a significant challenge associated with field experiments?
In the context of the study, what could affect reaction time apart from caffeine, according to the content?
In the context of the study, what could affect reaction time apart from caffeine, according to the content?
Why is ethical consent a problem in field experiments?
Why is ethical consent a problem in field experiments?
Why should researchers ensure participants have a consistent environment during an experiment?
Why should researchers ensure participants have a consistent environment during an experiment?
What is one reason why deception might be used in psychological research?
What is one reason why deception might be used in psychological research?
How does Dr. Rox's study design help infer cause and effect?
How does Dr. Rox's study design help infer cause and effect?
What is the primary advantage of using control groups in experiments?
What is the primary advantage of using control groups in experiments?
What aspect of Pozzulo et al.'s experiment illustrates a limitation in laboratory research?
What aspect of Pozzulo et al.'s experiment illustrates a limitation in laboratory research?
In Dr Rox's study, what role does the water group play?
In Dr Rox's study, what role does the water group play?
How might the results of a field experiment affect participants' perceptions of psychologists?
How might the results of a field experiment affect participants' perceptions of psychologists?
Can you suggest an alternative control group for Dr Rox's coffee study?
Can you suggest an alternative control group for Dr Rox's coffee study?
What was the focus of the Bandura et al. study?
What was the focus of the Bandura et al. study?
What is a randomised control trial (RCT) and why is it considered the 'gold standard'?
What is a randomised control trial (RCT) and why is it considered the 'gold standard'?
Describe the purpose of a control group in an RCT.
Describe the purpose of a control group in an RCT.
What is a placebo, and how does it relate to the placebo effect in RCTs?
What is a placebo, and how does it relate to the placebo effect in RCTs?
Explain what is meant by a 'single-blind design' in the context of RCTs.
Explain what is meant by a 'single-blind design' in the context of RCTs.
How do researchers calculate changes in symptoms before and after treatment in an RCT?
How do researchers calculate changes in symptoms before and after treatment in an RCT?
Why is it significant for participants to be unaware of whether they received the drug or the placebo?
Why is it significant for participants to be unaware of whether they received the drug or the placebo?
What role does expectancy play in the effectiveness of treatments in RCTs?
What role does expectancy play in the effectiveness of treatments in RCTs?
In the study mentioned by Perry et al., what were participants unaware of, and why was this important?
In the study mentioned by Perry et al., what were participants unaware of, and why was this important?
What is the significance of double-blind randomised controlled trials (RCTs) in research?
What is the significance of double-blind randomised controlled trials (RCTs) in research?
Why is valid, informed consent a concern in double-blind RCTs?
Why is valid, informed consent a concern in double-blind RCTs?
What potential issue arises from treatment allocation in RCTs?
What potential issue arises from treatment allocation in RCTs?
What is a wait-list control group in the context of RCTs?
What is a wait-list control group in the context of RCTs?
How do double-blind RCTs support inter-rater reliability?
How do double-blind RCTs support inter-rater reliability?
What ethical arguments support conducting double-blind RCTs despite the lack of informed consent?
What ethical arguments support conducting double-blind RCTs despite the lack of informed consent?
What role does participant consent play in double-blind RCTs, especially regarding the possibility of receiving a placebo?
What role does participant consent play in double-blind RCTs, especially regarding the possibility of receiving a placebo?
In Dr. Rox's study, what was the control group's alternative to caffeine?
In Dr. Rox's study, what was the control group's alternative to caffeine?
Flashcards
Randomised Control Trial (RCT)
Randomised Control Trial (RCT)
A type of research study that uses random assignment to groups and compares the effects of an intervention or treatment.
Postal Questionnaire
Postal Questionnaire
A research method where data is collected from participants using mailed questionnaires.
Rating Scale: Forced/Fixed Choice
Rating Scale: Forced/Fixed Choice
A type of questionnaire where participants must choose from a predetermined set of options, often on rating scales.
Psychometric Tests
Psychometric Tests
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Null Hypothesis
Null Hypothesis
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Alternative Directional (One-Tailed) Hypothesis
Alternative Directional (One-Tailed) Hypothesis
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Non-Directional (Two-Tailed) Hypothesis
Non-Directional (Two-Tailed) Hypothesis
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Temporal Validity
Temporal Validity
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Field Experiment
Field Experiment
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Lack of Informed Consent
Lack of Informed Consent
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Replicability
Replicability
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Control Group
Control Group
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Independent Variable
Independent Variable
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Dependent Variable
Dependent Variable
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Comparisons Between Groups
Comparisons Between Groups
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Control Variables
Control Variables
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Independent Measures Design
Independent Measures Design
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Experimental Group
Experimental Group
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Random Allocation
Random Allocation
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Participant Variables
Participant Variables
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Demand Characteristics
Demand Characteristics
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Ecological validity
Ecological validity
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Randomized controlled trial (RCT)
Randomized controlled trial (RCT)
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Internal Validity
Internal Validity
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External Validity
External Validity
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Extraneous Variables
Extraneous Variables
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Laboratory experiment
Laboratory experiment
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Placebo
Placebo
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Single-Blind Design
Single-Blind Design
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Placebo Effect
Placebo Effect
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Expectancy Effects
Expectancy Effects
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Random Assignment
Random Assignment
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Double-blind RCT
Double-blind RCT
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Control Group in RCTs
Control Group in RCTs
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Wait-list control group
Wait-list control group
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Informed Consent in RCTs
Informed Consent in RCTs
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Random Allocation in RCTs
Random Allocation in RCTs
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Strengths of RCTs
Strengths of RCTs
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Ethical concerns of RCTs
Ethical concerns of RCTs
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Replication in RCTs
Replication in RCTs
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Study Notes
Research Methodology
- Research methods are crucial components of the science of psychology.
- Key methods include experiments (laboratory and field), self-reports (questionnaires and interviews), observations, correlations and longitudinal studies.
- Each method comes with its own strengths and weaknesses relating to validity, reliability and generalisability.
Methodological Concepts
- Aims: Clearly defined statements of the research's purpose and intended outcomes.
- Hypotheses: Testable predictions about the relationship between variables (directional or non-directional).
- Variables: Factors that are measured or manipulated (independent/dependent/co-variables).
- Operational definitions: Precise definitions of variables specifying how they will be measured.
Sampling of Participants
- Population: The entire group of individuals that a researcher is interested in studying.
- Sample: A subset of the population selected for the research.
- Sampling techniques: Methods for selecting participants from a population (e.g., random, opportunity, volunteer).
- Generalizability: The extent to which findings can be applied to the wider population.
- Representativeness: How well the sample reflects the characteristics of the population.
Ethical Considerations
- Valid consent: Participants must be aware of the study's nature and give their agreement to participate.
- Confidentiality: Protecting participant privacy; data must not be identifiable.
- Debriefing: Providing participants with information about the study's aims and results after its completion, addressing any concerns.
- Right to withdraw: Participants should be free to leave the study at any time without penalty.
- Minimising harm: Protecting participants from physical and/or psychological harm throughout the research process.
- Use of Deception: Deception in research should be justified and followed by informed debriefing to mitigate potential harm.
Data Analysis
- Quantitative data: Numerical data, easily analyzed statistically.
- Qualitative data: Non-numerical data, requiring interpretation for analysis.
- Descriptive statistics: Summarize the data (e.g., mean, median, mode, standard deviation, range).
- Inferential statistics: Assess whether the findings of a study are statistically significant, showing whether the results are likely due to chance or a real effect.
Validity and Reliability
- Validity: The extent to which a study measures what it intends to measure and its findings can be generalised.
- Reliability: Consistency of a study's results; if the study is replicated, similar results can be expected.
- Test-retest reliability: Consistency of results when repeated over time.
- Inter-rater reliability: Agreement among different observers/raters in their assessment.
Thinking Fast & Slow
- System 1 thinking: Fast, automatic, intuitive.
- System 2 thinking: Slow, conscious, rational.
Choice Heuristics
- Availability heuristic: Decisions based on how quickly examples come to mind.
- Representativeness heuristic: Judging things based on how well they fit a prototype or category.
- Recognition heuristic: Choosing the more familiar option when faced with unfamiliar choices.
- Take-the-best heuristic: Selecting the best-known characteristic that differs between choices.
- Anchoring heuristic: Initial information influences subsequent judgments.
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