Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Measurement, Conceptualization,
and Operationalization
(what and how)
Measurement
• Active, careful, deliberate observations
• Assigning numbers or labels to units of
analysis to represent con...
Scientific Measurement
• Fully describe our methods
and procedures
• Allows replication and quality
judgments
• The proces...
Conceptualization
• Goes from the fuzzy and abstract to the
specific and concrete
• From a concept to the measure of conce...
The Concept of Lying
• Everyday concepts do not have
to agree
– "You look good in that dress."
– "Santa's watching you!"
–...
Things We Measure
• Direct Observables
– "My hair is blonde"
• Indirect Observables
– Writing "blonde" as hair color on a ...
Mutual Agreement
• Does measuring IQ mean that it really
measures intelligence? What about grades?
• Can they be useful re...
A Rose By Any Other Name
• Real: "Have you ever
really looked at your
hand, man?"
• Nominal: "The part of
me that has a mu...
How far will you go?
Decide & be clear about your range of variation
How can you measure?
• Verbal or Self-Reported
– Ask people
• Observation
– Watch people
• Archival Records
– Look through...
Levels of Measurement
• Nominal: Names
– The names of all your survey respondents
• Ordinal: Ranks
– How "blonde" someone ...
Reliability
• Get the same measure
each time
• Test-Retest
– "After thinking about it, I'm
not sure I'm blonde.."
• Split-...
Validity
• Face Validity
– "Yup, they're blonde."
• Criterion Related Validity
– "I see hair dye. They're probably blonde ...
White American Basketball League’s
Validity Problem
• "Only players that are natural born United
States citizens with both...
White Basketball League (cont)
• "Would you want to go to the game and worry
about a player flipping you off or attacking ...
Conceptualization Problems
• What do you
mean by
"white"?
• "One Drop
Rule"
• Italians, Irish,
Jewish people
Operationalization Problems
• Can you really
measure "race" by
how often a person
flips you off, attacks
you in the stands...
Once, Twice, Three Times a Lady of the
Night: DC Cops Can Arrest You for
Carrying More Than Two Condoms
• A spokesperson l...
And really, what identifies a prostitute,
anyway?
• Conceptualize "prostitute"
– What does it "mean"?
• Operationalize "pr...
03 - Measurement, Conceptualization, and Operationalization
03 - Measurement, Conceptualization, and Operationalization
Upcoming SlideShare
Loading in …5
×

0

Share

Download to read offline

03 - Measurement, Conceptualization, and Operationalization

Download to read offline

Related Audiobooks

Free with a 30 day trial from Scribd

See all
  • Be the first to like this

03 - Measurement, Conceptualization, and Operationalization

  1. 1. Measurement, Conceptualization, and Operationalization (what and how)
  2. 2. Measurement • Active, careful, deliberate observations • Assigning numbers or labels to units of analysis to represent conceptual properties • NOT "Some things happened over that way to some folks."
  3. 3. Scientific Measurement • Fully describe our methods and procedures • Allows replication and quality judgments • The process begins with the research problem or hypothesis – What the heck are we measuring? http://store.xkcd.com/
  4. 4. Conceptualization • Goes from the fuzzy and abstract to the specific and concrete • From a concept to the measure of concept
  5. 5. The Concept of Lying • Everyday concepts do not have to agree – "You look good in that dress." – "Santa's watching you!" – "The check is in the mail." – "I did not have sex with that woman." – "I didn’t want to hurt them, I only wanted to kill them."
  6. 6. Things We Measure • Direct Observables – "My hair is blonde" • Indirect Observables – Writing "blonde" as hair color on a form • Constructs – "Fun" as measured on a scale made up from several direct or indirect observables
  7. 7. Mutual Agreement • Does measuring IQ mean that it really measures intelligence? What about grades? • Can they be useful regardless? http://en.wikipedia.org/wiki/File:Blacktest_score_rise.jpg
  8. 8. A Rose By Any Other Name • Real: "Have you ever really looked at your hand, man?" • Nominal: "The part of me that has a mustache is my hand." • Operational: "Okay, Luke's hand is actually robotic, but we'll treat it the same as a hand."
  9. 9. How far will you go? Decide & be clear about your range of variation
  10. 10. How can you measure? • Verbal or Self-Reported – Ask people • Observation – Watch people • Archival Records – Look through people's houses… er, no.
  11. 11. Levels of Measurement • Nominal: Names – The names of all your survey respondents • Ordinal: Ranks – How "blonde" someone is on a scale • Interval: Numbers ("how much") – Blonde #5 vs. Blonde #3.2 • Ratio: Interval with a true zero – How many days you've had blonde hair
  12. 12. Reliability • Get the same measure each time • Test-Retest – "After thinking about it, I'm not sure I'm blonde.." • Split-Half – "This half of my hair is blonde. Is the other half?" http://www.flickr.com/ photos/starsalive/3951 012933/
  13. 13. Validity • Face Validity – "Yup, they're blonde." • Criterion Related Validity – "I see hair dye. They're probably blonde now." • Construct Validity – "If they're blonde, they should be having fun." • Content Validity – "But what about people who only dye SOME hair?"
  14. 14. White American Basketball League’s Validity Problem • "Only players that are natural born United States citizens with both parents of Caucasian race are eligible to play in the league," the statement said. • Lewis said he wants to emphasize fundamental basketball instead of "street- ball" played by "people of color."
  15. 15. White Basketball League (cont) • "Would you want to go to the game and worry about a player flipping you off or attacking you in the stands or grabbing their crotch?" he said. "That's the culture today, and in a free country we should have the right to move ourselves in a better direction.
  16. 16. Conceptualization Problems • What do you mean by "white"? • "One Drop Rule" • Italians, Irish, Jewish people
  17. 17. Operationalization Problems • Can you really measure "race" by how often a person flips you off, attacks you in the stands, and grabs their crotch? http://www.flickr.com/photos/malingering/166283679/
  18. 18. Once, Twice, Three Times a Lady of the Night: DC Cops Can Arrest You for Carrying More Than Two Condoms • A spokesperson later clarified that "sufficient cause" can be "congregating with at least one other person ... late at night with no apparent destination, and in possession of multiple condoms […in a prostitution free zone.]" • So where's the problems with this?
  19. 19. And really, what identifies a prostitute, anyway? • Conceptualize "prostitute" – What does it "mean"? • Operationalize "prostitute" – How do you measure it – Without "false positives"?

Views

Total views

2,657

On Slideshare

0

From embeds

0

Number of embeds

12

Actions

Downloads

144

Shares

0

Comments

0

Likes

0

×