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CORSO DI LAUREA IN ORGANIZZAZIONE DEI SERVIZI DELLA PUBBLICA AMMINISTRAZIONE POLITICA ECONOMICA 2014/2015 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING.

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Presentation on theme: "CORSO DI LAUREA IN ORGANIZZAZIONE DEI SERVIZI DELLA PUBBLICA AMMINISTRAZIONE POLITICA ECONOMICA 2014/2015 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING."— Presentation transcript:

1 CORSO DI LAUREA IN ORGANIZZAZIONE DEI SERVIZI DELLA PUBBLICA AMMINISTRAZIONE POLITICA ECONOMICA 2014/2015 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES Eric P. BETTINGER and Bridget Terry LONG FERRARI SALVATORE The review of Economics and Statistics Mart.120762 August 2010

2 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES INTRODUCTION American industries have tried to save on costs and increase employment, using part-time This change had a considerable importance also in the field of education ↑ of part-time faculty, particularly ADJUNCT INSTRUCTORS 2

3 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES INTRODUCTION Regarding higher education, critics argue that adjuncts reduce educational quality because they often have less education than full-time professors On the other hand, by specializing in teaching or being concurrently employed, adjuncts could enhance learning experiences 3

4 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES INTRODUCTION This paper examines the impact of adjunct instructors in relation to the course who want to attend Future course-taking is significant in that it can be an indication of student interest and revelation of student’s expected success 4

5 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES INTRODUCTION To estimate the impact of adjunct instructors we compare the outcomes of student who had different types of instructors The results that we want to go to check are: COURSE TAKING IN A SUBJECT MAJOR CHOICE 5

6 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW Hoxby, Caroline, “Would School Choice Change the Teaching Profession?” National Bureau of Economic Research (2002) Ehrenberg, Ronald G., and Dominic Brewer, “Do School and Teacher Characteristics Matter? Evidence from the High School and Beyond,” Economics of Education Review (1994) Borjas, George J., “Foreign-Born Teaching Assistants and the Academic Performance of Undergraduates,” American Economic Review (2000) 6

7 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW Norris, Timothy, “Nonnative English-speaking Teaching Assistants and Student Performance,” Research in Higher Education (1991) Fleisher, Belton, Masanori Hashimoto, and Bruce Weinberg, “Foreign GTAs Can Be Effective Teachers of Economics,” Journal of Economic Education (2000) 7

8 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW Ehrenberg, Ronald G., and Liang Zhang, “Do Tenured and Tenure-Track Faculty Matter?” Journal of Human Resources (2005) Bettinger, Eric, and Bridget Terry Long, “The Increasing Use of Adjunct Instructors at Public Institutions: Are We Hurting Students?” in Ronald Ehrenberg (Ed.), What’s Happening to Public Higher Education (Westport, CT: Greenwood Press, 2006) 8

9 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW According to some studies would negatively affect: Leslie, David W., “The Growing Use of Part-Time Faculty: Understanding Causes and Effects,” New Directions for Higher Education (1998) Pisani, Anoush M., and Nathan Stott, “An Investigation of Part- Time Faculty Commitment to Developmental Advising,” Research in Higher Education (1998) Gappa, Judith M., “The New Faculty Majority: Somewhat Satisfied But Not Eligible for Tenure,” New Directions for Institutional Research (2000) 9

10 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW According to other studies affect positively: Leslie, David W., and Judith M. Gappa, “The Part-Time Faculty Advantage,” Metropolitan Universities: An International Forum (1995) 10

11 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES LITERATURE REVIEW The increasing use of adjunct instructors: Leslie, DavidW., “The Growing Use of Part-Time Faculty: Understanding Causes and Effects,” New Directions for Higher Education (1998) Burgon, M., R.Weisbuch, and S. Lowry, “A Profession in Difficult Times: The Future of Faculty,” Liberal Education (1999) Balch, Pamela, “Part-Time Faculty Are Here to Stay,” Planning for Higher Education (1999) 11

12 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL FRAMEWORK 12

13 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL FRAMEWORK Concerns about Selection: COURSE FIXED EFFECT TERM-YEAR FIXED EFFECT 13

14 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL FRAMEWORK INSTRUMENTAL VARIABLES APPROACH 14

15 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL FRAMEWORK 15

16 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 16

17 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 17

18 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 18

19 EMPIRICAL RESULTS DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES 19

20 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 20

21 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 21

22 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 22

23 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 23

24 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 24

25 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 25

26 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 26

27 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 27

28 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 28

29 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 29

30 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES EMPIRICAL RESULTS 30

31 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES CONCLUSION The impact of alternative instructors varies by discipline Adjunct instructors are especially effective in fields that are more directly tied to a specific profession, like education and engineering, although they also had relative positive effects in the sciences 31

32 DOES CHEAPER MEAN BETTER? THE IMPACT OF USING ADJUNCT INSTRUCTORS ON STUDENT OUTCOMES CONCLUSION Older Adjunct instructors are more effective in a subject tied to a specific occupation Younger adjunct instructors are more effective in more academic subject Alternatively, using adjunct instructors may allow full-time tenure track faculty to more effectively focus onresearch 32


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