PROPOSED IMMIGRATION POLICY REFORM & FARM LABOR MARKET OUTCOMES



Table 5 Estimated beta coefficients and standard errors for the outcome equations estimated

by polynomial, nonparametric I and nonparametric II methods

Variablea

Polynomial

Methodb____________

Nonparametric

Method Ic___________

Nonparametric
Method IId___________

Coefficient

S. Err or

Coefficient

S.Error

Coefficient

S.Error

Constant

1.79182

0.02072

----

----

---

---

Age

-0.00115

0.00117

-0.00104

0.00118

-0.00115

0.00117

Age sq.

0.00001

0.00002

0.00001

0.00002

0.00001

0.00002

Farm work last year

0.00192

0.00072

0.00180

0.00074

0.00192

0.00072

Experience

0.01189

0.00186

0.01282

0.00189

0.01189

0.00186

Experience sq

-0.00059

0.00010

-0.00065

0.00010

-0.00059

0.00010

English

-0.00392

0.00530

-0.00418

0.00533

-0.00392

0.00530

Female

-0.03970

0.00842

-0.03997

0.00827

-0.03970

0.00842

Piece rate

0.17784

0.00901

0.17786

0.00900

0.17784

0.00901

Grower

0.04105

0.00633

0.04085

0.00632

0.04105

0.00633

Seasonal worker

0.00011

0.00498

0.00033

0.00499

0.00011

0.00498

Education

0.00600

0.00084

0.00597

0.00084

0.00600

0.00084

Foreign farm work
Experience

0.00620

0.00535

0.00630

0.00536

0.00620

0.00535

After 2001

0.06019

0.00683

0.05984

0.00650

0.06019

0.00683

California

0.04973

0.00376

0.04965

0.00376

0.04973

0.00376

Age*pscore

0.01188

0.00285

0.01167

0.00286

0.01188

0.00285

Age sq*pscore
Farm work last

-0.00016

0.00003

-0.00016

0.00003

-0.00016

0.00003

year*pscore

0.00521

0.00164

0.00532

0.00168

0.00521

0.00164

Experience*pscore

-0.00584

0.00251

-0.00652

0.00242

-0.00584

0.00251

Experience sq*pscore

0.00047

0.00010

0.00054

0.00010

0.00047

0.00010

English*pscore

0.03746

0.00746

0.03962

0.00745

0.03746

0.00746

Female*pscore

-0.03008

0.01768

-0.02901

0.01753

-0.03008

0.01768

Piece rate*pscore

0.04276

0.01960

0.04278

0.01953

0.04276

0.01960

Grower*pscore
Seasonal

0.04555

0.01480

0.04666

0.01475

0.04555

0.01480

Worker*pscore

-0.04703

0.01385

-0.04818

0.01388

-0.04703

0.01385

Education*pscore

Foreign farm work

-0.00254

0.00172

-0.00241

0.00174

-0.00254

0.00172

Experience*pscore

0.00837

0.01151

0.00740

0.01152

0.00837

0.01151

After 2001*pscore

0.06955

0.01541

0.07020

0.01507

0.06955

0.01541

California*pscore

-0.01112

0.00848

-0.01116

0.00844

-0.01112

0.00848

Pscore

-0.15046

0.10896

----

----

---

---

Pscore2

0.73697

0.44991

----

----

---

---

Pscore3

-2.20958

0.61096

----

----

---

---

Pscore4_______________

1.47909

0.28288

----

----

---

---

aPscore’ denotes the propensity score, which is the probability of becoming legalized. bThe outcome equation is
estimated as a polynomial in the propensity score (Heckman, Urzua and Vytlacil, 2006). cThis is the LIV estimator
from Heckman and Vytlacil (2001, 2005). dThis method combines the nonparametric I and the polynomial
approach.

25



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