# chap 2: research methods

Flashcards by mlbutler, updated more than 1 year ago
 Created by mlbutler over 4 years ago
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Vocab

## Resource summary

 Question Answer 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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