Final Exam Study Guide Flashcards
what are the benefits to learning about research methods?
to be able to do research
to be able to understand research
What is basic research?
science used to understand a phenomenon, links, mechanisms
goal is understanding, practical goal many, many steps away
What is applied research?
science used to inquire about program, test, intervention
goal of improving performance of effectiveness of a program
Should we think about basic and applied research as a dichotomy?
yes, as basic research is to have an overall understanding and applied research is to have an understanding of something specific
What is the scientific method?
capacity to make decisions and implement them in practice and affect changes systematically find order, lawful relations among variables
Why is the scientific method important to use?
the best-known way to discover how and why the world works
What is intuition?
Unquestioningly accept your own personal judgement
What is anecdotal evidence?
Single story or person’s experience to form basis of understanding
what is authority?
Believe those in authority without closely examining their opinion or evidence
What is pseidoscience?
Using seemingly scientific terms and demonstrations to substitute claims that are not based on scientific research
What is peer review?
The process by which scholars assess the quality and accuracy if one another’s research papers.
what are peer review’s benefits?
Gives credibility to scholar’s work
Improves authors work
Helps make the decision of what to publish
Helps to prioritize what to read
Articles in peer reviewed publications are cited by mass media to inform the public
“Peer review is the guarantee that every discovery theory, and conclusion is approved by the scientific community”
What are the different types of scientific literature?
Journal article
review article
meta analysis
edited book
editorial/opinion article
short news article
What does CRAAP stand for?
Current (date of publication)
Relevant (does the source contribute to your topic)
Authority (academic credentials, who are they, what’s their purpose)
Accuracy (do they cite sources, can you verity info, grammar errors or typos)
Purpose (what was the authors purpose to writing this, is it biased, how was it funded)
What is the CRAAP test used for?
to make sure the source you are using is over all a good, credible, and reliable source
What is an independent variable?
a variable that us manipulated (by experimenter or another entity)
What is a dependent variable?
The outcome measure
What is an extraneous variable?
occurs when the researcher or experimenter unintentionally influences how participants should behave
could influence the DV
What is an attribute independent variable?
measured but cannot be manipulated
What is an active independent variable?
manipulated by the experimenter
What are the characteristics of a research question?
has an IV and DV
what are the characteristics of a hypothesis?
1.It is never formulated in the form of a question.
2.It should be empirically testable, whether it is right or wrong.
3.It should be specific and precise.
4.It should specify variables between which the relationship is to be established.
What are the different ways a hypothesis can be written?
General (non directional) format
Predictive (directional) format
What is an associational research question?
Is there a significant association or relationship between two variables?
Have IV and DV, but doesn’t matter which is which. Identify two variables instead.
what is a differences research question?
if two or more groups show a significant difference in a variable/outcome
- Can be 2 or more groups
What does an associational research question look like?
Is there a relationship between age and time spent using a cell phone while driving?
What are the two variables?
- Age
- Time spent using a cell phone while driving
What does a differences question look like?
We think parents and non parents are different in how much they use their cell phone while driving
- Is IV active or attribute?
- Attribute
- What is the DV?
- How much they use their phones while driving
What is qualitative research?
data that is not numerical
subjective, interpretive, descriptive, open ended questions, loose observations, focus on participant experiences, conclusions can be subjective
small groups
What is quantitative research?
numerical data
statistics, should be replicable by anyone, focused on specific behaviors/ideas that can be counted, conclusions are objective
How are qualitative and quantitative research different?
qualitative is small groups, conclusions are subjective and they are non numerical data
quantitative is large groups, conclusions are objective, can be repeated by anyone and get the same results and the data is numerical or countable
What is experimental research?
direct manipulation and control of variables
casual
What is non-experimental research?
Relationships among, or difference between, variables are studied through observations and measurement
Not causal
What is the difference between experimental and non-experimental research?
experimental research is direct manipulation to gather data and is casual
non-experimental research is non manipulated data where you make conclusions based off observations and it is not casual
What is a categorical variable?
discrete groups
age group, sex, citizenship or race
What is a continuous variable?
entire range of values
age, height, distance, temperature
What is a true-experimental research design?
involves direct manipulation and control of variables of a group of randomly assigned participants
experimental research
What is a quasi-experimental research design?
assigned based on other criteria or an existing characteristic, unethical to assign
experimental research
What is a comparative research design?
IV not manipulated
IV is categorical
groups are compared on the DV
inferential statistics
2 groups or more
is there a difference between the groups in our DV?
non experimental
What is an associational research design?
IV not manipulated
IV is continuous
relationships between variables are evaluated
inferential statistics
is there an association between the IV and DV?
non-experimental
What is a descriptive research design?
only describing current sample
What does IV manipulation mean?
change its level systematically so that different groups of participants are exposed to different levels of that variable, or the same group of participants is exposed to different levels at different times.
What is the difference in categorical and continuous IV?
continuous data describes the type of information collected or entered into study.
categorical data describes a way of sorting and presenting the information in the report.
What type of statistics are used for true experimental research designs?
inferential statistics
what are the statistics used for quasi-experimental research designs?
inferential statistics
what statistics are used comparative research designs?
inferential statistics
what statistics are used for associational research designs?
inferential statistics
what statistics are used for descriptive research designs?
descriptive statistics
What is the most common type of research design?
correlational research design
What is a cross sectional study?
data is collected at one point in time
test everyone only once
“snapshots in time”
What is a longitudinal study?
data is collected repeatedly over time
test everyone more than once
changes over time
What are the advantages of a cross-sectional study?
cost: inexpensive
number of participants: lots
time: can collect data fairly quick
What are the disadvantages of a cross sectional study?
cant establish causality
possible fluctuations in variable
cohort effects
what are the advantages of a longitudinal stufy?
can establish causality
measurement as it happens
what are the disadvantages of a longitudinal study?
cost: expensive
time: long time to collect waves of data
number of participants: can be relatively smaller
drop out and selective attention
What type of study are differences measured?
cross sectional
What type of study are changes measured?
longitudinal
Which type of study can we say that we evaluated aging?
longitudinal
What is a cohort?
graduate date, birth year, marriage year, etc.
What is the cohort effect?
differences caused by experiences and circumstances unique to a generation
what is selective attribution?
In the example of Jenna arriving late for work, her boss attributed her lateness to an external factor: heavy traffic.
What is a prospective longitudinal study?
where the same participants are followed over a period of time.
what is a retrospective longitudinal study?
looking back in time, thus using existing data such as medical records or claims database
how are prospective and retrospective studies different?
prospective studies are done with new data that is collected where retrospective studies are done with data from the past and or old data
what is a sequential study?
Examines changes between participants of different ages at the same point in time
which designs is a sequential study a combination of?
longitudinal and cross sectional
How can we ask cross sectional effects in a sequential study?
collect data at one time in the sequential study
how can we ask longitudinal effects in a sequential study?
follow the participants of the sequential study over time and collect data
how can we ask cohort effects in a sequential study?
more than one birth cohort would be followed over the same developmental span of time but different historical spans of time
what is an intensive longitudinal design?
involve many repeated measurements taken on individuals, dyads, or groups, and include diary and experience sampling studies
what are the advantages of a intensive longitudinal design?
lots of measurements
best for outcome where we expect lots of fluctuations or variability day to day or throughout the day.
what type of variable is best suited for intensive longitudinal studies?
time
what is a burst design?
a design that incorporates bursts of intensive repeated assessment within a relatively short period of time (e.g., days, weeks) that are repeated longitudinally, over more widely spaced temporal intervals (e.g., annually).
which designs is a burst deign a combination of?
short term and long term longitudinal studies
what are inferential statistics?
infer from the sample about the population
test hypothesis, draws conclusions
cannot tell us which one is correct
allow us to make inferences about the true differences in the population on the basis of the sample data
give us the probability that the difference between means (or the association) reflects random error rather than a real difference (or association)
can only tell us about probabilities in terms of our conclusions and results not certainties
what are descriptive statistics?
only describing current sample
describes sample, summary of the data
how are the goals of inferential and descriptive statistics different?
descriptive statistics state facts and proven outcomes from a population, whereas inferential statistics analyze samplings to make predictions about larger populations.
which designs use inferential statistics?
comparative/differences
associational/correlational
experimental
quasi-experimental
what is a population?
all people you want to study; make inferences about
what is a sample?
the group of participants you actually get to examine or test
what are the various measures of central tendency?
mean, median and mode
How is mean measured?
add all the numbers together then divide by the number of values in the set
how is median measured?
arrange the data from smallest to largest
how is mode measured?
which number appears the most times
what are the advantages of finding the mean?
uses all the scores
what are the disadvantages of finding the mean?
heavily influences by outlier (an extreme score; higher or lower than majority of scores
what are the advantages of finding the median?
not influences by outliers
what are the disadvantages of finding the median?
ignores all but the middle of the values
what are the advantages of finding the mode?
not influences by outliers
what are the disadvantages of finding the mode?
ignores all but the middle of the values
what is an outlier?
a single data point that goes far outside the average value of a group of statistics
which measure of central tendency is most affected by outliers?
the mean
is it possibly to have too much or too little variability?
yes