Introduction to Psychology: Key Concepts, Scientific Methods, and Theories

What is psychology?

The scientific study of behavior and mental processes.

Why is Freud not representative of modern psychology?

Less than 5% of psychologists focus on Freudian theory, and his ideas are mostly criticized today.

What are some major flaws in Freud's methods?

No controlled experiments, reliance on case studies, use of post-diction, and lack of empirical evidence.

What is the basis of modern psychology?

It is based on scientific research, using data and experimentation.

What are the strengths of diversity in psychology?

It provides a broad understanding of human and animal behavior.

What is a weakness of having many subfields in psychology?

It makes it harder to define psychology clearly.

What makes psychology scientific?

It uses scientific methods, produces data-based conclusions, and applies findings to real-world problems.

What are the three features (pillars) of science?

1. Systematic Empiricism 2. Public Verifiability 3. Empirically Solvable Problems.

What is systematic empiricism?

Knowledge comes from observation using structured, controlled methods.

What does public verifiability entail?

Research is shared openly, allowing others to replicate results and challenge findings.

What are empirically solvable problems?

Only studies testable questions and avoids untestable topics.

What is folk psychology?

Common sense based on intuition and personal beliefs.

What are the problems with folk psychology?

It can contradict itself and cannot be scientifically tested.

Why does psychology face criticism?

Due to confusion with Freudian ideas, presence of pseudoscience, and challenges to people's beliefs.

Why is psychology considered a young science?

It is still developing and studies controversial topics that can challenge beliefs.

How does psychology help individuals?

It encourages critical thinking, evaluating information, and making better decisions.

What does psychology promote?

Open-mindedness and scientific thinking.

What is the definition of psychology?

The scientific study of behavior and mental processes.

What are the three pillars of science?

Empiricism, Public Verifiability, and Solvable Problems.

How does common sense differ from science?

Common sense is based on intuition and personal beliefs, while science relies on empirical evidence.

What does falsifiability mean in the context of scientific theories?

A theory must be able to be proven false.

What is required for predictions made by a scientific theory?

Predictions must be testable.

What happens if a theory cannot be disproven?

It is considered not scientific.

What treatment did Benjamin Rush use that exemplifies an unfalsifiable theory?

Bloodletting.

What was the problem with Benjamin Rush's theory?

It could never be proven wrong, making it unfalsifiable.

What are the three criteria that scientific theories must meet?

Be specific, make clear predictions, and allow for the possibility of being wrong.

What distinguishes a good theory from a bad theory?

Good theories are specific and testable, while bad theories are vague and unclear.

What is an example of a bad theory?

'Stress, memory, and control are related' - it's not testable and too general.

What is an example of a good theory?

'Stress reduces memory, but perceived control reduces stress' - it has clear relationships and can be tested.

What is the difference between a theory and a hypothesis?

A theory explains a body of data and generates predictions; a hypothesis is a specific testable prediction derived from a theory.

Why do theories change in science?

Theories are revised or replaced based on new evidence or failed predictions.

What is myside bias?

Favoring evidence that supports your beliefs and ignoring contradictory evidence.

What are the steps in scientific progress?

Develop a theory, create hypotheses, test hypotheses, and evaluate results.

What happens if a theory is not supported by test results?

The theory is changed or rejected.

What distinguishes laws from theories in science?

Some theories become laws when they are extremely well-supported.

What is required for new theories to replace old theories?

New theories must explain both old and new findings.

Does science guarantee absolute truth?

No, science does not guarantee absolute truth; it aims to separate more certain from less certain knowledge.

Why is falsifiability important?

It helps in critical thinking, spotting weak theories, and avoiding misinformation.

What does a good understanding of falsifiability encourage?

Openness to being wrong and learning from mistakes.

What is the definition of a hypothesis?

A testable prediction derived from a theory.

How does science progress?

By testing and rejecting ideas.

What is Essentialism?

The belief that good theories explain the true essence of things and focus on ultimate meanings.

Why does science reject Essentialism?

Science does not answer ultimate questions and focuses on testable knowledge rather than absolute truth.

What do scientists think about final answers?

Scientists are skeptical of final answers and accept that knowledge can change.

What is Operationalism?

The principle that scientific concepts must be linked to observable, measurable events, creating operational definitions.

What are operational definitions?

Definitions of concepts using specific measurements or procedures.

Give an example of a non-operational definition of hunger.

Feeling hungry.

Provide an operational definition of hunger.

Hours without food or blood sugar level.

What is a direct operational definition?

A definition measured directly through observation.

What is an indirect operational definition?

A definition measured through relationships with other variables.

What are latent constructs?

Concepts that cannot be directly observed and are inferred, such as intelligence or anxiety.

What is reliability in research?

The consistency of results when repeated.

What is validity in research?

The accuracy of a measure, indicating it measures what it is supposed to measure.

How do scientific concepts change over time?

Definitions improve with new research and better measurements.

What is the presenting-bias problem?

The influence of preexisting assumptions on thinking about behavior.

How do operational definitions help in psychology?

They create clear, shared meanings and reduce confusion.

What is a common misconception about operationalism?

Some believe it is dehumanizing, but it actually improves understanding and makes psychology more scientific.

How do operational definitions relate to falsifiability?

They make theories testable and allow theories to be proven wrong.

What is the main focus of Essentialism?

The search for ultimate truth and definitions before studying concepts.

What does science focus on compared to Essentialism?

Science focuses on measurement and testing, defining concepts after studying them.

Summarize Essentialism in one phrase.

Search for ultimate meaning (not scientific).

Summarize Operationalism in one phrase.

Define concepts through measurement.

What is the relationship between reliability and validity?

Reliability refers to consistency, while validity refers to accuracy.

What do operational definitions achieve in psychology?

They make psychology scientific.

What are case studies?

Detailed investigations of a single individual or very small group.

Why are case studies useful early in a scientific field?

They are useful for exploration.

What is a major limitation of case studies?

They cannot confirm or disconfirm theories due to lack of comparative power.

How do small sample sizes affect case studies?

They make the studies unrepresentative of the population.

What is required for scientific testing that case studies rarely accomplish?

The testing of generated hypotheses.

What is the placebo effect?

The phenomenon where people report improvement from treatments with no therapeutic element.

Why are personal testimonials misleading?

They can be influenced by the placebo effect.

What role do control groups play in research regarding placebos?

They receive placebos to compare real effects vs. perceived effects.

What is a double-blind procedure?

A method that prevents bias from both participants and researchers.

How can psychological placebos affect patients?

Even signing up for therapy can make people feel better.

What is the vividness problem?

People rely on vivid, memorable information when making decisions.

Why are personal stories persuasive?

They are extremely vivid and memorable, even if not reliable.

What is an example of vividness bias?

People perceive plane crashes as more dangerous than car crashes.

How does vividness affect scientific interpretation?

Studies with vivid images are rated as more credible than those with graphs.

What are warning signs of pseudoscientific claims?

Claims of secret formulas, heavy reliance on testimonials, and promises of quick fixes.

What opportunity costs are associated with pseudoscience?

Time and money spent on pseudoscience could be used for real solutions.

What is a key takeaway regarding case studies and testimonials?

They are not reliable evidence for evaluating psychological treatments.

Why are double-blind procedures important in research?

They ensure more accurate results by preventing bias.

How do vivid stories distort judgment?

They overshadow scientific data and lead to reliance on less accurate information.

What is correlation?

A statistical relationship between two variables.

How is correlation measured?

Using Pearson's correlation coefficient.

What does a correlation coefficient closer to ±1.00 indicate?

A stronger relationship between variables.

What does a correlation coefficient closer to 0.00 indicate?

A weaker relationship between variables.

What is a positive correlation?

Both variables rise or fall together.

What is a negative correlation?

As one variable rises, the other falls.

What does no correlation mean?

There is no systematic relationship between the variables.

What tool is commonly used to visualize correlations?

Scatterplots.

What is the main limitation of correlational studies?

They cannot determine causation.

How do experimental studies differ from correlational studies?

Researchers manipulate variables in experimental studies.

What is the third variable problem?

A hidden factor influencing both variables in a correlation.

Why is the third variable problem significant?

It can create spurious correlations that misrepresent relationships.

Give an example of a third variable affecting correlation.

Temperature influencing both shark attacks and ice cream sales.

What is the directionality problem?

The inability to determine which variable causes the other.

Why does directionality matter in correlation?

Correlations do not show temporal order, making causation unclear.

What is selection bias?

When people self-select into groups rather than being randomly assigned.

How does selection bias create problems in research?

It can create spurious correlations by influencing group characteristics.