Chapter 3 And Four Flashcards
Scientific method
Contains five steps observation state the problem form the hypotheses design the system to collect data analyze the data and formulate the theory of
What steps are the hallmark of the scientific study
Forming a hypothesis and designing the system to collect the data
Theory
Set of coherent groups of principles or hypotheses that explains some aspect of an area of study
Research methods
Case study experiments field study correlational studies analog studies single participants studies
Case study
And intensive study of one individual that relies on clinical data such as observation, psychological tests and historical and biographical information. Used when testing new therapeutic her diagnostic techniques and Forthe study of rare psychological phenomena.
Single participant experiment
Person his current behavior is the control or baseline to compare with future behaviors compare the behavior before and after treatment is the change occurs and if the behavior of returns the original after with drawl of treatment we can be certain that the treatment was responsible for the behavior change.
Multiple baseline study
A single participant experimental design in which baselines and two or more behaviors or the same behavior and two or more settings are obtained prior to the intervention
External validity
The degree to which the findings of a particular study can be generalized to other groups or conditions.problem with this in single participant design
Field study
And investigative technique in which behaviors and events are observed and recorded in their natural environmentproblems are that field studies do not provide information about causality and also there maybe so many factors affecting real life situations that is impossible to control and even distinguish all variables.
Analog study
And investigation that at times to replicate restimulate under controlled conditions a situation that occurs in real life
Correlational studies
The extent to which variations in one variable our company by increases or decreases in the second variable
Negative correlation
An increase in one variable is accompanied by a decrease in another variable. The greater the value of the correlation positive or negative the stronger the relationship between variables
Problems with correlational studies
They do not demonstrate cause-and-effect
Scientific method book def
A method of inquiry that provides for the system a collection of data control observation and testing of hypotheses
Hypothesis
Tentative explanation for certain facts or observations
Importance of being able to replicate research
Reduces the chance the findings are due toexperimental bias metodological flaws or usual characteristics of the group studied
Internal validity
Confidence that one thing causes another Highest is experimental design -gold Standard of research-middle is observational studies and single study research designs such as correlational studies in the lowest internal validity’s case studies and clinical judgment or opinions
Evidence-based therapies
Treatment techniques that have strong research support
Operational definition
Concrete description of the variables that are being studied. Needto be clear precise and consistent
Potential self correction
One of the unique characteristics of the scientific method. Open discussion testing and verification of research minimize influence from scientist personal believes perceptions biases values attitudes and emotions
Reliability
The degree to which measure, procedure, test or classification system yieldsthe same results repeatedly
Validity
Does the testing instrument really test what it was developed to measure.
Base rate
The rate of natural occurrence of a phenomenon of the population studies
Statistical significance
The statistical probability that the findings are not due to chance alone
Clinical significance
Things can be statistically significant without being clinically significant if it’s not necessarily meaning formore likely to happen in studies with large sample sizes
Experiments
The best tool for testing cause and effect relationships it’s technique of scientific inquiry in which a prediction is made about two variables: the independent variable is manipulated and changes in the dependent variable are.
Experimental hypothesis
A prediction concerning how an independent variable will affect the dependent variable
Independent variable
The possible cars experimenter manipulates this to determine its affect on a dependent variable
Dependent variable
Expected to change as a result of changes in the independent variable
Control group
The group that is similar in every way to the experimental group except that they are not exposed to the independent variable
A tightly controlled study
Increases it internal validity problems occur with external validity
Placebo effect
Improvements produced by expectations of a positive treatment outcome
Placebo
And ineffectual her sham treatment such as an in active substance used as a control in an experimental study.they can actually produce biological changes in the brain such as affecting neurotransmitters or endorphins
Single-blind design
And additional control in which experiment to spoons are on aware of the purpose of the research
Double blind design
Experimental design in which neither of those helping with the experiment nor the participants are aware of the experimental conditions.
Endo phenotypes
Measurable characteristics such as neurochemical, endocinological, neuroanatomical,Neuropsychological,cognitive or neuropsychological, that can give clues regarding the specific genes involved in disorders. Must be heritable, seen in family memb who don’t have the disorder, and occur more frequent. In the family than gen. Pop.