Psychology Research Methods: Scientific Method, Study Types, and Data Analysis

What is the scientific method?

An objective method for testing hypotheses through verifiable and replicable observations.

What are the goals of psychological science?

Description, understanding, prediction, and application of mental processes and behaviors.

What does the goal of description in psychology entail?

Detailing or cataloguing mental processes and behaviors.

What is involved in the understanding goal of psychological science?

Developing explanations or theories about how the mind works.

How does the prediction goal function in psychological science?

Using theories to predict behaviors and thoughts.

What is the application goal in psychology?

Applying theories to influence behavior and thought to create societal and technological changes.

What is an independent variable (IV)?

The manipulated variable in an experiment, hypothesized to be the cause of the predicted effect.

What is a dependent variable (DV)?

The measured variable in an experiment, hypothesized to be affected by the independent variable.

What are the steps in an experiment?

1) Formulate the question/theory; 2) Formulate the hypothesis; 3) Design the study; 4) Collect data; 5) Analyze results; 6) Communicate findings; 7) Revise theory if necessary.

What is a hypothesis?

A specific, testable prediction about the outcome of an event.

What does it mean for a scientific method to be self-correcting?

Correct observations are replicated while incorrect assertions are ruled out, leading to strengthened or modified theories.

What is a confounding variable?

A variable that can affect the outcome of an experiment, potentially leading to incorrect conclusions.

What is descriptive statistics?

Statistical methods that summarize and describe the features of a dataset.

What are inferential statistics?

Statistical methods that allow researchers to make inferences or predictions about a population based on a sample.

What is an example of a cognitive processing limitation?

The brain has a limited supply of mental resources, which can be disrupted when stretched too thin.

What is the significance of the experiment involving cell phone use and breaking distance?

It tests the hypothesis that cell phone use increases breaking distance in response to sudden obstacles.

What is the purpose of critical evaluation of results in an experiment?

To analyze and interpret data to determine if the hypothesis is supported or refuted.

What does it mean when data supports a hypothesis?

It strengthens the theory related to the hypothesis.

What happens if data refutes a hypothesis?

The theory may need to be revised or discarded.

What is the role of communication in scientific research?

To share findings through scientific journals and presentations for peer review and validation.

What is a specific example of a hypothesis related to stress and memory?

High levels of stress decrease memory accuracy.

What is the effect of multitasking on response time?

People tend to respond more slowly and make more errors when trying to do more than one task at a time.

What is the relationship between cell phone use and driving safety?

Cell phone use while driving is hypothesized to increase the number of accidents.

What are societal changes that can be influenced by psychological theories?

Changes aimed at minimizing distractions like cell phone use while driving.

What is the importance of defining variables in an experiment?

It allows for clear measurement and understanding of the effects being studied.

What is the continuous cycle of the scientific method?

The process of testing hypotheses, analyzing data, and revising theories based on findings.

What is the independent variable in the stress and memory experiment?

C) stress level experienced by the subjects

What is the dependent variable in the stress and memory experiment?

E) the number of words remembered

What are the three main types of research designs?

Experiment, Correlation, Description

What does an experiment aim to show?

Causation by manipulating one variable (IV) and measuring another (DV).

What is a key characteristic of correlational studies?

They measure the relationship between variables without manipulation.

What does 'correlation does not imply causation' mean?

A correlation between two variables does not mean one causes the other.

What are some measurement methods in research?

Self-report, Behavioral, Physiological

What is the purpose of descriptive statistics?

To summarize and interpret data.

What is central tendency in statistics?

The typical value/score, which can be mean, median, or mode.

What does standard deviation measure?

The average difference between each score and the mean score.

What is the range in statistics?

The difference between the highest and lowest scores.

What is the role of inferential statistics?

To determine the probability that results occurred by chance.

What is the placebo effect?

When a subject's expectations influence the results.

What is a double-blind control condition?

Neither the subject nor the experimenter knows the condition assignments.

What is the third variable problem in correlational studies?

A third factor that may influence both variables being studied.

What is the significance of the correlation coefficient?

It measures the strength and direction of the correlation between two variables.

What is the typical range of a correlation coefficient?

From -1 to +1.

What does a correlation of 0 indicate?

No relationship between the two variables.

What is the purpose of using a frequency histogram in experimental studies?

To plot data visually for analysis.

What is the difference between low and high variability?

Low variability indicates scores are close to the mean; high variability indicates scores are spread out.

What is the role of a control condition in experiments?

To isolate the effect of the independent variable.

What is the main goal of the scientific method in psychology?

To systematically investigate and understand behavior and mental processes.

What is an observational study?

A descriptive research method where behavior is observed without manipulation.

What is a case study?

An in-depth analysis of a single subject or group.

What is a self-report method?

A measurement method where subjects provide their own responses, often through questionnaires.

What is the significance of statistical significance in research?

It indicates that the results are unlikely to have occurred by chance.

What is a potential issue with subject expectancy?

It can lead to biased results based on what subjects expect to happen.