1.1 What is psychology Flashcards
psychology
the scientific study of behavior and mental processes
Behavior
includes actions, feelings, and biological states such as sleeping
Mental processes
include problem solving, intelligence, and memory,
Correcting Common Misconceptions About the Field of Psychology
may have the impression that psychology is all about how you feel and how you can feel better. Although a large proportion of psycholo- gists counsel or otherwise treat clients, most of these professionals hold a doctorate degree in psychology
The main goals of psychology and psychological research
● To describe behavior To predict behavior
● To explain behavior To control or change behavior
Scientific Method
the scientific method when testing ideas about behavior.
Outline the steps of the scientific method
- Define and describe the issue to be studied (a prediction)
- Form a testable hypothesis
- Choose an appropriate research strategy.
- Conduct the study to test your hypothesis.
- Analyze the data to support or reject your hypothesis.
A predictive hypothesis
- makes a specific prediction or set of predictions about the relationships among variables.
- description and prediction
- are made when the researcher measures the variables of interest but does not manipulate or control the variables in the study.
causal hypothesis
- specifically states how one variable will influence another variable.
- Tester only
- researcher is able to control or manipulate the main variables in a study
- can only be tested by means of an experiment.
- a researcher must be able to conclude how one variable affects or causes a change in another variable.
Observational
naturalistic studies are predominately used to achieve the goals of description and predic- tion. In their observational study, Campos et al. found that although both mothers and fathers
researchers attempt to minimize reactivity to ensure that they are observing the true behavior of their participants.
Surveys
knowing which behaviors are related to a higher frequency of illness enables a psychologist to predict who is more at risk for physical or mental illness. However, who you ask to complete a survey and how you ask them are critical elements in distinguish- ing good survey research from biased research.
surveys are advantageous in that they allow psychologists to pose a lot of questions to a large sample of people. Accurate information can be gathered in a relatively short period of time.
it can be used only to describe and predict behavior
survey meaning
a research method that asks a large group of people about their attitudes, beliefs, and/or behaviors
Correlational
The researcher does not control variables but rather measures them to see whether any reliable relationship exists between them.
correlation coefficient— a statistic that tells us how strong the relationship between two factors is.
positive correlation
means that as one variable increases, the other variable also tends to increase; or as one variable decreases, the other variable tends to decrease
negative correlation
as one variable increases, the other variable tends to decrease in what is referred to as an inverse relationship.
Correlational studies
enable research- ers to make predictions about behavior, but they do not allow us to draw cause- and-effect conclusions
experiment
a research method that is used to test causal hypotheses
causal conclusions are limited.
Advantages and Disadvantages of Using Experiments
- Experiments have sev- eral advantages.
- explaining and changing behavior
- Experiments also have disadvantages
- describing and predicting behavior