Unit 4 - Research Flashcards
Critical Thinking
- making reasoned judgements (people’s judgements should be logical and well thought out)
- the ability to ask and seek answers for critical questions at the right time
- can help avoid false beliefs that may lead to poor decisions or prove dangerous to our mental and physical health
4 Basic Criteria for Critical Thinking
1) there are very few “truths” that do not need to be subjected to testing (only religious/personal beliefs/values can be accepted without proof)
2) all evidence is not equal in quality
3) just because someone is considered to be an authority or to have a lot of expertise does not make everything that person claims automatically true
4) critical thinking requires an open mind (balance of skepticism and willingness to consider possibilities)
Empericism
using data to back up a claim
Scientific Method
a system of reducing bias and error in the measurement of data
5 Steps of Scientific Method
1) identify question/problem
2) hypothesis
3) select method, conduct research
4) analyze data, evaluate hypothesis
5) publish, peer review, replication and/or further studies
Confirmation Bias
tendency to only notice things that agree with view of the world
Descriptive Methods
gather information about what’s happened or is happening
Naturalistic Observation
watch organisms in their natural environment
PROS: realistic picture of behavior
CONS: observer bias, each naturalistic setting is unique, researchers don’t have control over natural world
Observer Effect
organisms who know they are being watched will not behave normally
Participant Observation
observer becomes participant in group they’re observing
Observer Bias
observer has opinion about what they expect to see, and person recognizes ONLY actions that support preconceived expectations and ignores actions that coincide with it
Blind Observers
observers don’t know what the research question is, and therefore have no preconceived notions about what they “should” see
Laboratory Observation
researcher controls everything
PROS: degree of control researcher/observer has
CONS: artificial situation might result in artificial behaviors
Case Studies
participant(s) studied in great detail
PROS: tremendous amount of detail, only way to get certain types of information, good way to study rare occurrences
CONS: researchers can’t apply results to other similar people, vulnerable to bias because method is a form of detailed observation
Surveys
researchers ask series of questions about topic they’re studying
PROS: private information, tremendous amount of data on very large group of people
CONS: have to be careful about participants, people don’t always give accurate answers, have to be careful about wording of questions
Representative Sample
randomly select people from group researchers are interested in
Population
entire group in which researcher is interested in
Participants
people who are a part of the study
Courtesy Bias
deliberately giving the answer they think is more socially correct rather than their true opinion so that no one gets offended
Correlation
measure of the relationship between 2 or more variables
Variable
anything that can change or vary
Correlation Coefficient
- represents the direction of the relationship and its strength
- represented by “r”
- if positive –> the 2 variables increase in the same direction
- if negative –> inverse relationship
- number always ranges between +1.00 and -1.00
- number closer to +1.00 is strong positive correlation
- number closer to -1.00 is strong negative correlation
- if number is closer to zero it is weaker
Operational Definition
specifically names the operations (steps/procedures) that the experimenter must use to control/measure variables in the experiment
Independent Variable
variable that’s manipulated
Dependent Variable
response of participants that’s measured
Hawthorne Effect
participants’ behavior is altered as a result of being a part of the experiment
Confounding Variables
variables that interfere with each other and their possible effects on some other variable of interest
Experimental Group
exposed to independent variable
Control Group
gets not treatment or placebo
Random Assignment
each participant has equal chance of being assigned to each condition
Placebo Effect
the expectations and biases of the participants in a study can influence their behavior