Nepedia
Back to Discover
Advanced Reader
🧬

Psychological research

life science Maturity 11-13 Next article →

Psychological research is the systematic study and analysis of the experiences and behaviors of individuals or groups. Psychologists use these studies to understand the human mind and how people interact with the world. This work has many practical uses in different fields. It can help improve education and workplace environments. It is also vital in clinical settings to help treat mental health conditions. By using structured methods, researchers can move beyond simple guesses to find real patterns in human nature.

One of the most common ways to study behavior is through experimental methods. In an experiment, a researcher manipulates a specific influence called the independent variable (IV). They then measure the effects this change has on a specific aspect of the subject's behavior, known as the dependent variable (DV). To ensure accuracy, researchers must account for extraneous variables. These are extra factors that might influence the results. If an extraneous variable is not controlled, it becomes a confounding variable. A confounding variable is an external factor that can skew results and lead to unreliable conclusions.

Experiments can take several different forms depending on how much control the researcher has. In a true experiment, participants are often randomly chosen to prevent experimenter's bias. Scientists may also use quasi-experiments, where the researcher sets up a controlled environment but does not control the independent variable. Another type is the field experiment. In this method, the researcher controls the independent variable but conducts the study in a natural environment rather than a lab. This allows researchers to see how variables work in the real world, though they have less control over the surroundings.

Observational research offers a different way to gather data by watching ongoing behavior. In participant observation, the researcher actually joins the social group they are studying. For example, Leon Festinger joined a group called The Seekers to observe them. This group believed aliens would visit them and that the world would end. Festinger studied how their attitudes changed when the event did not happen. He published these findings in his 1956 book, "When Prophecy Fails."

Another method is naturalistic observation. This involves studying behaviors in their natural environments without any manipulation by the observer. This approach provides high ecological validity because the events are not staged.

Researchers also use descriptive and case study methods to understand specific phenomena. Descriptive research often begins with observations that can later lead to complex theories. Some psychologists use diaries to record these observations. For instance, Jean Piaget used "baby biographies" in developmental psychology. Case studies involve an intensive analysis of a single person, group, or event. These are often used by clinical psychologists to describe abnormal conditions. Sigmund Freud used case studies extensively to develop his theory of psychoanalysis.

Notable case studies include the chimpanzee Washoe, who was the first non-human to learn American Sign Language.

To understand how people change over time, scientists use specific timing methods. Longitudinal research follows the same group of individuals over an extended period. These studies can sometimes last for several decades to see how variables relate over a lifetime. In contrast, cross-sectional research looks at different groups of people at one single point in time. Researchers might compare different cohorts, which are groups of people roughly the same age, such as 10th, 11th, and 12th graders. This helps them see how age or different life stages affect certain behaviors or abilities.

Ethics are a fundamental part of all psychological research to ensure participant safety. Research carries the risk of harming subjects, so studies must be carefully reviewed. An Institutional Review Board (IRB) usually approves proposed studies. The IRB ensures that any risks to subjects are justified by the expected benefits of the research. They also verify that informed consent is obtained. This means the participant agrees to join after being told about the research, the risks, and the benefits. It also ensures they know they can stop participating at any time.

Finally, psychology uses many specialized tools to measure the mind. Psychometrics is a field focused on the theory and technique of psychological measurement. It aims to objectively measure things like personality traits, skills, and educational achievement. Other methods include archival research, which uses existing data like statistical records or written history. There are even computational methods that build computer models of human cognitive processes. These models treat the human mind like a computer program that manipulates symbols. This diverse toolkit allows psychologists to explore every corner of human experience.

747 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

More to explore

✨ What else?

Related topics you might enjoy

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.