Your SlideShare is downloading. ×
Experimental research
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Introducing the official SlideShare app

Stunning, full-screen experience for iPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Experimental research

9,120
views

Published on

Published in: Technology, Economy & Finance

0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
9,120
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
188
Comments
0
Likes
3
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. WELCOME TO OUR PRESENTATION
  • 2. QUANTITATIVE RESEARCH
    Intervention Research:
    - Experimental Research
    Non-Intervention Research:
    - Correlation Research
    - Survey Research
  • 3. EXPERIMENTAL RESEARCH
    An experiment research is a research situation where at least one independent variable, called the experimental variable, is deliberately manipulated or varied by the researcher.
    The purpose of experimental research is to study cause and effect relationships.
  • 4. VARIABLE
    Independent Variable
    experimental or treatment variable (it is the cause)
    Dependent Variable/Measured Variable
    is what is measured to assess the effects of the independent variable
  • 5. EXPERIMENTAL RESEARCH DESIGN
  • 6. EXPERIMENTAL RESEARCH DESIGN
  • 7. EXPERIMENTAL RESEARCH DESIGN
  • 8. INSTRUMENT
    tools researchers use to collect data for research studies (alternatively called “tests”)
    The types of instruments:
    1. Cognitive Instruments
    2.Affective Instruments
    3.Projective Instruments
  • 9. COGNITIVE INSTRUMENTS
    Measure an individual’s attainment in academic areas typically used to diagnose strengths and weaknesses.
    Types of cognitive instruments:
    • achievement tests
    provide information about how well the test takers have learned what they have been taught in school
    • aptitude tests
    measure the intellect and abilities not normally taught and often are used to predict future performance
  • 10. Affective instruments
    Measure characteristics of individuals along a number of dimensions and to assess feelings, values, and attitudes toward self, others, and a variety of other activities, institutions, and situations.
  • 11. Types of affective instruments:
    attitude scales
    self-reports of an individual’s beliefs, perceptions, or feelings about self, others, and a variety of activities, institutions, and situations
    values tests
    measure the relative strength of an individual’s valuing of theoretical, economic, aesthetic, social, political, and religious values
    personality inventories
    an individual’s self-report measuring how behaviors characteristic of defined personality traits describe that individual
  • 12. Projective instruments
    Measure a respondent’s feelings or thoughts to an ambiguous stimulus
    Primary type of projective test:
    • associational tests
    participants react to a stimulus such as a picture, inkblot or word onto which they project a description.
  • 13. Two issues in using instruments
    1.Validity: the degree to which the instrument measures what it purports to measure
    2.Reliability: the degree to which the instrument consistently measures what it purports to measure
  • 14. VALIDITY
  • 15. Types of validity
    1. Content validity
    the degree to which an instrument measures an intended content area.
    2.Criterion-related validity
    an individual takes two forms of an instrument which are then correlated to discriminate between those individuals who possess a certain characteristic from those who do not
    3.Construct validity
    a series of studies validate that the instrument really measures what it purports to measure
  • 16. RELIABILITY
  • 17. Types of reliability...
    1.Stability (“test-retest”):
    the degree to which two scores on the same instrument are consistent over time
    2.Equivalence (“equivalent forms”):
    the degree to which identical instruments (except for the actual items included) yield identical scores
    3.Internal consistency (“split-half” reliability with Spearman-Brown correction formula , Kuder-Richardson and Cronback’s Alpha reliabilities, scorer/rater reliability):
    the degree to which one instrument yields consistent results