Unit 7: Quantitative Research Design

Question 1

dimensions of a quantitative study

Answer 1

control over independent variable, type of group comparison, time frame, observance of independent and depend variable, setting

Question 2

experimental

Answer 2

manipulation of independent variable; control group; randomization

Question 3

quasi experiemnt

Answer 3

manipulation of independent variable; no randomization and/or no comparison group; but efforts to compensate for this lack

Question 4

pre experimental

Answer 4

manipulation of independent variable, no randomization or no comparison group, limited control over extraneous variable

Question 5

nonexperimental

Answer 5

no manipulation of independent variable

Question 6

between subjects

Answer 6

subjects in groups being compared are different people

Question 7

within subjects

Answer 7

subjects in groups being compared are the sample people at different times or in different condition

Question 8

cross sectional

Answer 8

data are collected at a single point

Question 9

longitudinal

Answer 9

subjects are groups being compared are the same people at different times or in different conditions

Question 10

retrospective

Answer 10

study begins with dependent variable and looks backwards for cause or influence

Question 11

prospective

Answer 11

study begins with independent variable and looks forward for the effect

Question 12

naturalistic setting

Answer 12

data collected in real world setting

Question 13

labratory

Answer 13

data collected in contrived laboratory setting

Question 14

characteristic of experiments

Answer 14

manipulation, control, randomization

Question 15

manipulation

Answer 15

experiences consciously vary the independent variable and then observes its effect on the dependent variable

Question 16

pretest-posttest

Answer 16

design involves the observation of the dependent variable at two points in time : before and after

Question 17

control group

Answer 17

refers to a group participants whose performance on a dependent variable is used to evaluate the performance

Question 18

experimental group

Answer 18

the group receiving the intervention on the same dependent variable

Question 19

types of experimental design

Answer 19

basic (post test only), factorial (manipulates two variable at the same time cross design, (exposing participants to more than one tx)

Question 20

counterfactual

Answer 20

no intervention, an alt. tx, a placebo, standard method of care, a lower dose or intensity of treatment, delayed treatment

Question 21

advantages of experimental

Answer 21

test cause and effect, casuality

Question 22

limitation of experimental

Answer 22

variables are amendable to manipulation, may not be ethical , hawthorne effect

Question 23

double blind study

Answer 23

used as a counter measure neither the subject or administers know who is in the experimental or control group

Question 24

types of quasi

Answer 24

nonequivalent control group - involves two or more groups of subjects observed before and after the implementation
time series design -control group but no randomization

Question 25

types of non experimental

Answer 25

correlation, descriptive research

Question 26

self slection

Answer 26

is when the members of the groups being studied are n the group, i part, because they deferentially posses traits or characteristic extraneous to the research problem

Question 27

four situation with multiple points of data collection

Answer 27

time-related process, time-sequenced phenomena, comparative purposes, enhancement of research control

Question 28

attritition

Answer 28

loss of participant over time

Question 29

controlling external factors such as

Answer 29

research environment, control of time, constancy of communication to subjects

Question 30

methods on controlling intrinsic factors such as

Answer 30

randomization, homogeneity, matching, statistical control, evaluation of control methods

Question 31

characteristic of a good design

Answer 31

statistical conclusion, internal validity, external validilty and construct validity