chap 2: research methods

Flashcards by mlbutler, updated more than 1 year ago
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Ethical Principles for Animal Research 1) Research must have a clear, scientific purpose. 2)Provide humane living conditions for animals. 3)legally obtain animals 4)Least amount of suffering
Standard deviation Show how far scores vary from the mean (average) score.
68-95-99.7 rule Means 68% of all scores fall within one standard deviation of the mean.
Normal distribution Forms a bell-shaped or symmetrical curve.
Mode ost frequently occurring score
Median the middle score
mean the average
Operational Definitions statement of your procedures
Dependent Variable What is being measured in the expiriment
Random assignment Assigning participants to experimental and control groups by chance
Cross-sectional Study Compares individuals at various ages at one point in time
:Longitudinal Study studies a single individual or group over an extended amount of time.
Zero correlation indicates there is NO relationship between 2 variables
Negative correlation -1.00 means 2 variables mppve in opposite directions
Positive correlation +1.00 means 2 variables move in the same direction
Correlation coefficient a number value that indicates the strength and direction of the relationship between two variables
Correlation studies researchers observe or measure a relationship between two variables
Participant bias tendency for participants to respond a certain way because they know they are being observed
Researcher bias tendency for researchers to look for evidence to support their hypothisis and ignore contradictory evidence
Skewed distribution Distribution with most scores squeezed to one end, few scores stretched out like a tail
Reliability consistency and reliability of results
Quasi-experimentative data information can be reported as numbers for ease of handling
Population all of the individuals in the group to which the study applies
Placebo Physical or psychological treatmwnt given to the control group that resembles the treatment given to the experimental group
Normal distribution Represented by a normal curve
Naturalistic Observations Observing behavior in naturally occurion situations without interfering
inferential statistics statistics used to interpret data and draw conclusions
Hypothesis predictions of how factors are likely to be related
Experimental group The group youre experimenting on
Experiment research method that involves manipulation of variables
ethical guidelines for human research 1)informed consent 2)voluntary participation 3)debriefing 4)confidentiality
descriptive statistics numbers that summarize a set of research data from a sample
Confounding variables factors that cause differences between the experimental and control group
Central tendency describes average of distribution .
Case study research technique in which one person is studied in depth in hope of revealing universal principles.
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