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NCE Questions & 100% Correct Answers

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Experimental Research ~~> Experimental Research is the process of gathering data in order to make evaluative comparisons regarding different situations. Experiment ~~> The Experiment is the most valuable type of research it is used to discover cause-and-effect relationships How many...

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1 | P a g e | © copyright 2024/2025 | Grade A+




NCE Questions & 100% Correct Answers
Experimental Research

✓ ~~> Experimental Research is the process of gathering data in order

to make evaluative comparisons regarding different situations.




Experiment

✓ ~~> The Experiment is the most valuable type of research it is used to

discover cause-and-effect relationships




How many individual participants do you need to conduct a "true"

experiment?

✓ ~~> To conduct a "true" experiment you needs 30 individual

participants.




How many individual participants do you need to conduct Correlational

research?

✓ ~~> To conduct correlational research you needs 30 subjects per

variable.




Quasi-experiment




Master01 | September, 2024/2025 | Latest update

, 2 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> A Quasi-experiment uses PRE-EXISTING groups, so the

independent variable (IV) cannot be altered (i.e. gender or ethnicity),

& cannot state with any statistical confidence that the IV caused the

dependent variable (DV).




What type of experiment is a correlational research, and what does it tell us

about cause and effect?

✓ ~~> Correlational research is a Quasi-experimental and does not yield

cause-effect data.




What do correlational studies tell us about the relationship between

variables?

✓ ~~> Since correlational research is Quasi-experimental, it only shows a

positive or negative relationship between the variables, but does not

yield cause-effect data.




Parsimony

✓ ~~> Parsimony (aka Occam's Razor) refers to the practice of

interpreting the results in the simplest ways (Literally a tendency to be

miserly and not overspend.)




Occam's Razor


Master01 | September, 2024/2025 | Latest update

, 3 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> Occam's Razor (aka Parsimony) refers to the practice of

interpreting the results in the simplest ways (Literally a tendency to be

miserly and not overspend.)




Ex post facto study

✓ ~~> Ex post facto study is a type of quasi-experiment (literally means

'after the fact') connoting a correlational study in which preexisting

groups are utilized




Independent variable

✓ ~~> The Independent variable is the variable the researcher

manipulates, controls, alters, or wishes to experiment with. Memory

Device: 'I' manipulate the IV, or a hospital patient gets treatment form

IV)




Dependent variable

✓ ~~> The dependent variable expresses the outcome or the data

regarding factors one wants to measure. Memory Device: 'D' in

dependent signifies 'D' in data.




Validity




Master01 | September, 2024/2025 | Latest update

, 4 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> Validity is the extent or degree to which an idea/

conclusion/measurement/ score/ study is well-founded, measures what

it claims to measure, corresponds accurately to the real world &

answers the questions it is intended to answer. 'valid' in Latin meaning

strong, equivalent.




Internal Validity

✓ ~~> Internal validity 'in experiments' refers to whether the Dependent

Variables, 'DVs' , the data were truly influenced by the experimental

independent variables, 'IVs', treatment or if other factors impacted the

Data.




What are some examples of "Threats to internal validity"?

✓ ~~> Examples of threats to 'internal validity' or factors that reduce the

impact of tx on Data are 1. maturation of subjects, the psychological &

physical changes e.g. fatigue due to time involved, 2. 'mortality'

subjects withdrawing, 3. instruments used to measure the behavior or

trait, or 4. 'statistical regression' the notion that extremely high or low

scores would move toward the mean if utilized again.




External validity




Master01 | September, 2024/2025 | Latest update

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