CPRG 105: Lesson 3
Using Search Techniques
Boolean Operators
Truncation
What encourages young
people in America to
vote?
Copying and pasting this sentence into an
online catalog or database
sear...
• 2 Newspaper articles
• 1 Magazine article
• 1 Scholarly journal article
3 of which were irrelevant!
What encourages
young people in
America to vote?
Young
People
•Youth
•Young adults
Vote
•Votes/voted
•Voting
America
•United States
•US
 HOW do you combine your different search
terms to find the results you are looking for?
 Use Boolean operators and
trun...
 Connecting terms that broaden or narrow a
search
 AND narrows your search
 OR broadens your search
 Use AND to connect two different key
concepts
 FOR EXAMPLE:
Voting AND Youth
 Use OR to connect similar or alternate terms
that convey one of your concepts
 FOR EXAMPLE:
Youth OR Young People OR Yo...
 RESEARCH QUESTION: What encourages
young people to vote?
 My two key concepts are:
YOUNG PEOPLE and VOTE
 Say, I want ...
•Youth
•Young adults
Young
people
•Voting
•Voted
Vote
Voting Youth
I get 510 titles.
I get 4,474 titles.
I get 6 titles.
 NARROWS my search
 Gets me FEWER results
 Gets me sources that contain info on BOTH of
the different key concepts
 Voting AND youth
 BUT… I want to take into account the fact that
there are alternate terms for youth
◦ Young adults
◦ Y...
I already know I will get 4, 474 titles
I get 330 titles
I get 4,727 titles.
 BROADENS my search
 Gets me MORE results
 Gets me sources that contain EITHER of the
similar concepts
VOTING AND
(YOUTH OR YOUNG PEOPLE OR
YOUNG ADULTS)
NESTED SEARCH:
Combining OR and AND searches
I get 8 titles.
AND OR
 NARROWS your
search
 Gives you FEWER
 You want sources that
are about BOTH Topic
1 AND Topic 2
 BROADENS your
...
 Way to search for
variations on a
search term using
the base
 DuCat uses $
 Databases use *
 College$
◦ college
◦ col...
Vot$ AND (youth OR young people OR
young adults)
How many titles
do you get?
Which gives you MOST?
a. cars
b. cars AND automobiles
c. cars OR automobiles
Which gives you MOST?
a. cars
b. cars AND automobiles
c. cars OR automobiles
Which gives you FEWEST?
a. cars
b. cars AND automobiles
c. cars OR automobiles
Which gives you FEWEST?
a. cars
b. cars AND automobiles
c. cars OR automobiles
Which gives you MORE?
a. automobiles
b. automobil*
Which gives you MORE?
a. automobiles
b. automobil*
Lesson 3: Using Search Techniques
Lesson 3: Using Search Techniques
Lesson 3: Using Search Techniques
Lesson 3: Using Search Techniques
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Lesson 3: Using Search Techniques

  1. 1. CPRG 105: Lesson 3 Using Search Techniques Boolean Operators Truncation
  2. 2. What encourages young people in America to vote? Copying and pasting this sentence into an online catalog or database search box will NOT yield you (m)any results!!!
  3. 3. • 2 Newspaper articles • 1 Magazine article • 1 Scholarly journal article 3 of which were irrelevant!
  4. 4. What encourages young people in America to vote?
  5. 5. Young People •Youth •Young adults Vote •Votes/voted •Voting America •United States •US
  6. 6.  HOW do you combine your different search terms to find the results you are looking for?  Use Boolean operators and truncation with your search terms to help you create effective search strings
  7. 7.  Connecting terms that broaden or narrow a search  AND narrows your search  OR broadens your search
  8. 8.  Use AND to connect two different key concepts  FOR EXAMPLE: Voting AND Youth
  9. 9.  Use OR to connect similar or alternate terms that convey one of your concepts  FOR EXAMPLE: Youth OR Young People OR Young Adults
  10. 10.  RESEARCH QUESTION: What encourages young people to vote?  My two key concepts are: YOUNG PEOPLE and VOTE  Say, I want to look in DuCat for books that address BOTH of those concepts.  How can I do this?
  11. 11. •Youth •Young adults Young people •Voting •Voted Vote
  12. 12. Voting Youth
  13. 13. I get 510 titles. I get 4,474 titles.
  14. 14. I get 6 titles.
  15. 15.  NARROWS my search  Gets me FEWER results  Gets me sources that contain info on BOTH of the different key concepts
  16. 16.  Voting AND youth  BUT… I want to take into account the fact that there are alternate terms for youth ◦ Young adults ◦ Young people
  17. 17. I already know I will get 4, 474 titles I get 330 titles
  18. 18. I get 4,727 titles.
  19. 19.  BROADENS my search  Gets me MORE results  Gets me sources that contain EITHER of the similar concepts
  20. 20. VOTING AND (YOUTH OR YOUNG PEOPLE OR YOUNG ADULTS) NESTED SEARCH: Combining OR and AND searches
  21. 21. I get 8 titles.
  22. 22. AND OR  NARROWS your search  Gives you FEWER  You want sources that are about BOTH Topic 1 AND Topic 2  BROADENS your search  Gives you MORE  You want sources that are about EITHER Topic 1 OR Topic 2
  23. 23.  Way to search for variations on a search term using the base  DuCat uses $  Databases use *  College$ ◦ college ◦ colleges  Universit$ ◦ university ◦ universities  Vot$ ◦ vote ◦ votes ◦ voted ◦ voting votive
  24. 24. Vot$ AND (youth OR young people OR young adults) How many titles do you get?
  25. 25. Which gives you MOST? a. cars b. cars AND automobiles c. cars OR automobiles
  26. 26. Which gives you MOST? a. cars b. cars AND automobiles c. cars OR automobiles
  27. 27. Which gives you FEWEST? a. cars b. cars AND automobiles c. cars OR automobiles
  28. 28. Which gives you FEWEST? a. cars b. cars AND automobiles c. cars OR automobiles
  29. 29. Which gives you MORE? a. automobiles b. automobil*
  30. 30. Which gives you MORE? a. automobiles b. automobil*
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