Embed Size (px)
Citation preview
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 1/11
8-1
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 2/11
8-2
McGraw-Hill/Irwin © 2003 The McGraw-Hill Companies, Inc.,All Rights
Part TwoTHE DESIGN OF RESEARCH
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 3/11
8-3
Chapter Eight MEASUREMENT
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 4/11
8-4
Measurement
• Selecting obserable em!irical eents
• Using numbers or s"mbols to re!resent
as!ects o# t$e eents
• A!!l"ing a mapping rule to connect t$eobseration to t$e s"mbol
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 5/11
8-5
%$at is Measure&'
• Objects(
) T$ings o# or&inar" e*!erience
) Some t$ings not concrete
• Properties( c$aracteristics o# ob+ects
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 6/11
8-6
C$aracteristics o# Data
• Classi#ication
• Or&er
• Distance ,interal bet-een numbers.
• Origin o# number series
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 7/11
8-7
Data T"!es
Order Interval Origin
Nominal nonenonenone
Or&inal "es une/ual none
Interal "es e/ual or none
une/ualRatio "es e/ual 0ero
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 8/11
8-8
Sources o# Measurement Di##erences
• Res!on&ent
• Situational #actors
• Measurer or researc$er
• Data collection instrument
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 9/11
8-9
1ali&it"
• Content Validity
• Criterion-Related Validity
) 2re&ictie
) Concurrent
• Construct Validity
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 10/11
8-10
Reliabilit"
• Stabilit"
) Test3retest
E/uialence
) 2arallel #orms
• Internal Consistenc"
) S!lit3$al#
) 4R56 ) Cronbac$7s al!$a
7/23/2019 8 Measurement
http://slidepdf.com/reader/full/8-measurement 11/11
8-11
2racticalit"
• Econom"
• Conenience
• Inter!retabilit"
