Diversity in Physics: Impact of Using Minimum Acceptable GRE

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Diversity Considerations for Graduate Admissions

Casey W. Miller cwmsch@rit.edu

Rochester Institute of Technology

Director, Materials Science and Engineering

School of Chemistry and Materials Science

APS Committee on Minorities (2015-2018)

2015 Inclusive Grant Initiative

Division of Diversity and Inclusion

(Feb 2013)

Invited Diversity Talks; Invite me!

Outline

• Broadening Participation Matters

• State of Physics

• Bridge Programs and their Key Features

• Admissions Criteria and Diversity

• Using Minimum Acceptable GRE

Scores Negatively Impacts Diversity in

STEM and does not select students with the most research potential

Broadening Participation

Matters

• US Demographics are changing rapidly

– Minorities represent 1/3 of the US population, but much less in

STEM jobs (e.g., ~5.4% of PhDs)

– Engage URMs in STEM to utilize all facets of the domestic talent pool, address brain drain

Broadening Participation Matters

• Diversity is an Asset

– Diversity enhances innovation

– Collective intelligence from diverse social skills

Physics is among the least diverse of the sciences.

Credit: APS/Source: IPEDS Completion Survey

Physics is among the least diverse of the sciences.

US pop. age 25-29

US pop. age 21-24 average of 2006-2008 Credit: APS/Source: IPEDS Completion Survey

0.7

Physics is among the least diverse of the sciences.

0.6

0.5

Biology

Chemistry

Math & Stats

Earth Sciences

Physics

Engineering

0.4

0.3

0.2

0.1

0

1965 1970 1975 1980 1985

Year

1990 1995 2000 2005 2010

Credit: APS/Source: IPEDS Completion Survey

25%

Physics is among the least diverse of the sciences.

20%

15%

10%

Bachelor

5%

0%

1965 1970

Postdoctoral

Doctoral

1975 1980 1985

Year

1990 1995 2000 2005 2010

Credit: APS/Source: IPEDS Completion Survey & NSF-NIH Survey of Graduate Students & Postdoctorates in Science and Engineering

Small numbers =

Top URM Producers

University of California-Berkeley

University of Michigan at Ann

Arbor

Howard University

Florida Agricultural and

Mechanical University

University of Arizona

Alabama Agricultural and

Mechanical University

Hampton University

Rice University

University of California-Los

Angeles

University of Texas Hlth Sci Ctr

San Antonio

University of Texas at Austin

North Carolina State University at Raleigh

Potential for Impact

5-year Total Degree Production of

Top Producers of Physics URM PhDs

2006-

2010

8

8

8

4

4

6

5

5

5

4

4

4

Top Hispanic PhDs

University of California-Berkeley

Rice University

University of California-Los

Angeles

University of Michigan at Ann

Arbor

University of Texas Hlth Sci Ctr

San Antonio

University of Texas at Austin

Arizona State University Main

Harvard University

Stanford University

University of Arizona

University of Rochester

2006-

2010

6

4

4

4

4

4

3

3

3

3

3

Top African American

PhDs

Howard University

Florida Agricultural and

Mechanical University

Alabama Agricultural and

Mechanical University

Hampton University

North Carolina State

University at Raleigh

University of Michigan at Ann

Arbor

Georgia Institute of

Technology, Main Campus

Harvard University

University of Arizona

University of California-

Berkeley

University of Colorado at

Boulder

University of Illinois at

Urbana-Champaign

University of Maryland at

College Park

2006-

2010

8

6

5

5

4

4

2

2

2

2

2

2

2

Source: IPEDS Completion Survey by Race

What can be done?

Top Priority Actions

1) Increase undergraduate retention and completion via strong academic, social, and financial support.

2) Teacher prep, college prep programs, and

Transition to Graduate Study.

APS Bridge Program

But first you have to admit them.

Admissions Snapshot

Admissions is typically a two-tier process for all fields

Tier 1: Filters

Undergraduate GPA

GRE scores

Undergraduate Institution

Tier 2: Qualitative, Holistic

Research and leadership potential

Creativity, Innovation

Enthusiasm, passion for research

Diversity

It doesn’t really work much better than this

http://frontporchdenver.com/wp-content/uploads/sites/2/2012/06/coin_toss.jpeg

Many reasons for this,

Admissions is only one http://www.phdcompletion.org/information/Executive_Summary_Demographics_Book_II.pdf

Issues with the norm

• Grades

– Grade Inflation undermines minority participation http://www.gradeinflation.com/tcr2010grading.pdf

Most URMs attend State Colleges

URM Engineering #BA/BS

University of Florida (240/yr)

Florida International University

Texas A & M University-College Station

University of Central Florida

Georgia Institute of Technology-Main Campus

California State Polytechnic University-Pomona

The University of Texas at El Paso

The University of Texas at Austin

North Carolina A & T State University

The University of Texas-Pan American

Cal Polytechnic State University-San Luis Obispo

The University of Texas at San Antonio

Arizona State University-Tempe

University of California-San Diego

University of Houston

San Diego State University

Morgan State University

Prairie View A & M University

Alabama A & M University

North Carolina State University at Raleigh

Southern University and A & M College

Howard University

Tuskegee University

University of Maryland-College Park

University of South Florida-Main Campus

Virginia Tech (38/yr)

Rank URM Physical Sciences #BA/BS

13

14

15

16

9

10

11

12

5

6

7

8

1

2

3

4

21

22

23

24

17

18

19

20

25

26

Florida International University (85/yr)

Xavier University of Louisiana

The University of Texas at Austin

University of California-Santa Barbara

Texas A & M University-College Station

The University of Texas at El Paso

University of California-Los Angeles

University of Florida

Spelman College

University of California-Irvine

University of North Carolina at Chapel Hill

University of California-Santa Cruz

University of Arizona

University of New Mexico-Main Campus

Florida State University

Georgia State University

Jackson State University

The University of Texas at San Antonio

Columbia University in the City of New York

University of Memphis

CUNY City College

CUNY Graduate School and University Center

Savannah State University

Alabama A & M University

Georgia Southern University

Tennessee State University (15/yr)

Issues with the norm

• Test Scores

– “Guide to Use of Scores” not followed (or even known of)

– Significant race/gender group differences

– Correlations with Success are questionable

Pop Quiz:

With all else equal, which folder do you admit?

Folder A

GRE-Q: 740 (80%)

Folder B

GRE-Q: 800 (perfect)

http://www.ets.org/gre/institutions/scores/guidelines/

From ETS Guide to Use of Scores:

It is an inexact measure ; only score differences that exceed the standard error of measurement of a given score can serve as a reliable indication of real differences in applicants' academic knowledge and developed abilities.”

Translated to physics-ese:

CONSIDER INSTRUMENT RESOLUTION

S.E.M. ~60 points (on old GRE scale, 200-800).

740 = 800 = perfect!

US Physics PhD Programs

• About 180 graduate programs are listed in the AIP Graduate Programs book

– ~96% require the General GRE

• about one quarter of these have a stated minimum score for admission, with the median being 700 (~64%)

– ~48% require the Physics GRE

• about half of these have a stated minimum score for admission, with the median being 600 (32%).

From ETS Guide to Use of Scores

Guidelines

– A cutoff score based only on GRE scores should never be used as a sole criterion for denial of admission.

– Any department considering the use of a cutoff score should compile a rationale justifying the appropriateness of such a score for each measure:

(1) evidence that the proposed cutoff score for the measure usefully distinguishes between individuals who are likely to succeed in graduate school and those who are not, and

(2) the impact of the proposed cutoff score on the institution’s goals related to diversity. http://www.ets.org/gre/institutions/scores/guidelines/

From ETS document

"Factors that can influence performance on the GRE general test 2006-2007"

800 166

750

Median (NRC; Physics): 760

75%

700 155

650

600 148

550

500

25%

50%

144

450

400 140

350

300

These performance disparities are:

• Technically not “bias”

• Nearly independent of intended graduate major

• Qualitatively unchanged when controlling for undergraduate GPA

• Qualitatively the same for

•GRE Subject test

•SAT Math

•8 th grade math achievement tests

•4 th grade math achievement tests

• A feature of standardized testing.

Physical Sciences

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

Engineering

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

Life Sciences

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

Business

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

Social Sciences

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

800

700

600

500

400

300

200

Humanities and Arts

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

Education

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

ugGPA = A

800

700

600

500

400

300

200

SOURCE: ETS, "Factors that can influence performance on the GRE general test 2006-2007”

700

650

600

550

500

450

400

350

300

Asian White Hispanic Am. Ind.

Afr. Am.

SOURCE: Total Group Profile Report, College Board, 2009

College-Bound Seniors.

260

250

240

230

220

210

200

300

290

280

270

8th Grade

4th Grade

SOURCE: NCES. The Nation’s Report Card: Mathematics

2009 (NCES 2010-451), National Center for Education Statistics,

U.S. Department of Education.

84

82

80

78

76

74

72

70

90

88

86

SOURCE: U.S. Bureau of the Census, Income, Poverty, and Health Insurance Coverage in the United

States: 2010, Report P60, n. 238, Table B-2, pp. 68-73.; http://www.npc.umich.edu/poverty/#4

Despite these R/E/G/SES issues

• Cut-off scores are used all the time by admissions committee members.

– Sorting spreadsheets is easy.

– Faculty are busy, often reluctantly serving

– Faculty are not trained in selection

– “Low scores must tell you something.”

• But correlation R~0.2-0.3 is only with first year

GPA; by second year, R<0.1

a a NAS: In the Nation’s Compelling Interest: Ensuring Diversity in the Health-Care Workforce (2004)

Impact of Cut-off Scores?

Asian Am. White Hisp. (oth) Mex. Am. Am. Ind.

1000 3.5

350

14

12

3.0

300

800 12 10

2.5

250

600

10

8

2.0

200 8

6

150 400

6

1.5

100

50

200

4

2

4

2

1.0

0.5

0

200 400 600 800

0

200 400 600 800

Afr. Am.

0

200 400 600 800

Puerto Ric.

0

200 400 600 800

Men

0.0

200 400 600 800

Women

7

25 1000

250

6

20

200

5

800

15 4 600

150

10

5

0

200 400 600 800

GRE-Q Score

3

2

400 100

1

0

200 400 600 800

200

0

200 400 600 800

50

0

200 400 600 800

Only physical sciences & US citz.

Impact of Cut-offs:

%

Δ Representation

Representation

Cut

800 ∑

off one group

Cut

800 ∑

off all groups

Cut-off Asian Am. White URMs Women Men

60

Am. Ind.

700

Hisp. (oth)

9.3%

Other

7.6%

Mex. Am.

250%

82%

77%

20

11%

10

27%

Men

73%

64%

20

0

0

-10

-20

-20

-40

-60

-30

-80 -40

-100 -50

200 300 400 500 600 700 800

(155)

Cut-off

200 300 400 500 600 700 800

(155)

Cut-off

GRE Physics Subject Test

Working with APS

And ETS

GRE Physics Subject Test

7172

467

155

821

Cut-off on GRE Physics

SOURCE: ETS (via APS)

GRE Physics Subject Test

Cut-off on GRE Physics

SOURCE: ETS (via APS)

120.0%

100.0%

80.0%

60.0%

40.0%

20.0%

0.0%

370

Gender Gap Persists ∀ R/E; ∀ Nationalities

120.0%

Other Hispanic, Latino, or

Latino American F

100.0%

White (non- Hispanic) F

White (non- Hispanic) M

Mexican, Mexican

American, or Chicano F

Black or African

American F

Other Hispanic, Latino, or

Latino American M

80.0%

Mexican, Mexican

American, or Chicano M

Black or African

American M

60.0%

40.0%

20.0%

0.0%

370 870 370 870 370 870 370 870

Other F

Other M

870 370

Native Hawaiian, or Other Pacific

Islander F

Native Hawaiian, or Other Pacific

Islander M

870 370

Puerto Rican F

Puerto Rican M

Asian or Asian American

F

Asian or Asian American

M

870 870 370

From ETS Guide to Use of Scores

Guidelines

– A cutoff score based only on GRE scores should never be used as a sole criterion for denial of admission.

– Any department considering the use of a cutoff score should compile a rationale justifying the appropriateness of such a score for each measure:

(1) evidence that the proposed cutoff score for the measure usefully distinguishes between individuals who are likely to succeed in graduate school and those who are not, and

(2) the impact of the proposed cutoff score on the institution’s goals related to diversity. http://www.ets.org/gre/institutions/scores/guidelines/

Correlations with success are questionable

A+

A-

B+

B 9

B-

C+

4.0

3.8

3.6

3.4

3.2

3.0

Similar conclusions:

Michigan; Berkeley

2.0

2.5

3.0

3.5

4.0

20 40 60 80 100 20 40 60 80 100 20 40 60 80 100 ug GPA GRE-Q (%) GRE-V (%) GRE-Physics (%)

The validity of the GRE tests, is limited to first year grades.

Subject Test may tell you a little about preparation , convolved with R/E/G

NOT about potential to become a

PhD-level research scientist (the aim!)

The usual weight given to

GRE scores in admissions exceeds its predictive capabilities and has negative societal impact.

Diversity needn’t come at the expense of Quality

• But it can, if you’re: careless; too busy; or just going through the motions.

• Lowering the bar perpetuates stereotypes exactly by definition

• What bar? Potential for what?

RESEARCH!

Victoroff and Boyatzis, J. Dent. Ed 77 , 416 (2013):

Correlating clinical performance with admissions criteria and non-cognitive competencies

Cognitive

Non-Cognitive

Didactic

Yes

Maybe

Clinical

No

Yes

Self-Management competencies correlate with clinical grade.

1. Achievement Orientation

2. Adaptability

3. Initiative

4. Emotional Self-Control

5. Trustworthiness

6. Conscientiousness

7. Optimism

“Cognitive ability and knowledge are threshold aspects of professional work, necessary but not sufficient for outstanding professional performance.”

Issues with the norm

• Non-cogs considered after using filters that negatively impact diversity

Non-Cognitive Constructs

• Measurable!

• Results from decades of Industrial-

Organizational Psychology research

– non-cogs predict academic/job performance

– non-cogs show little if any group differences

– non-cogs are orthogonal variables to cognitive constructs (GPA, SAT/GRE)

Issues with the norm

• ill-defined protocols = haphazard review

– Extra/Zero scrutiny for underrepresented folks

Non Cogs: Implements

• Coarse Grained Rubrics

– can be implemented now!

– guides review of statements/letters/interviews

• can expedite the review process

• reduce implicit bias ( expectations based on race/gender/name/culture); combats reviewer fatigue

– inter-rater reliability

– develop in conjunction with a social scientist

– add short answer items on app to probe non-cogs?

http://www.vanderbilt.edu/gradschool/bridge/tools.htm

Non-Cogs: Implements

• Situational Judgment Tests

– could be implemented as part of the online application submission process (ease of use!)

– ask the test taker to describe how they would act in a hypothetical scenario; or rank the efficacy of several potential actions

– can be tailored to probe specific constructs or discipline-specific scenarios (hire an expert)

– susceptible to faking

– not terribly expensive

Mechanical Assembly of Data

• Normalize components

• Add them

• More effective and efficient than nonalgorithmic methods

• non-cogs are orthogonal to cogs

– weight these equally http://en.wikipedia.org/wiki/Apgar_score

Major Take-Aways

• Traditional admissions process

– No better than a coin toss

– Strongly filters under-represented groups

• Large race/gender gaps on standardized tests

• Grade inflation lowest at state universities

• Non-cognitive assessments can help

– increase the diversity of the applicant pool

– select students who will graduate

• Systematic evaluation protocols can

– limit implicit bias, increase diversity

– increase efficiency of screening applicants

• Get a social scientist to help!

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