Table 9 Cultural aggregations and team performance. OLS and Tobit estimates for only students aged less under 30 years old

From: Team production in a field experiment: study of aggregative vs. individual cultural activities

Predictor Model
OLS OLS OLS Tobit Tobit Tobit
  (1) (2) (3) (4) (5) (6)
Culturally aggregated team 1.532*** 1.586*** 1.528*** 1.759*** 1.831*** 1.742***
  (0.391) (0.391) (0.389) (0.444) (0.448) (0.452)
Female 0.131 0.410 0.332 0.184 0.504 0.393
  (0.463) (0.519) (0.517) (0.534) (0.530) (0.526)
Age 0.116 0.119 0.114 0.095 0.113 0.106
  (0.080) (0.084) (0.084) (0.080) (0.076) (0.077)
Area size 0.112 0.083 0.078 0.174 0.129 0.120
  (0.144) (0.146) (0.147) (0.164) (0.160) (0.161)
Income size 0.072 0.077 0.078 0.030 0.040 0.037
  (0.096) (0.096) (0.096) (0.112) (0.116) 0.117
High school grade 0.063*** 0.071*** 0.068*** 0.077*** 0.089*** 0.084***
  (0.019) (0.020) (0.020) (0.020) (0.020) (0.021)
Technic school − 0.390 − 0.294 − 0.266 − 0.252 − 0.201 − 0.151
  (0.396) (0.407) (0.408) (0.438) (0.433) (0.439)
Grade point average 0.009 0.009 0.012 0.000 − 0.004 0.000
  (0.038) (0.038) (0.038) (0.043) (0.045) (0.045)
Play an instrument 0.608** 0.639** 0.637** 0.714*** 0.743*** 0.738***
  (0.282) (0.281) (0.282) (0.203) (0.194) (0.205)
Sporting − 0.142 − 0.152 − 0.158 − 0.122 − 0.152 − 0.159
  (0.174) (0.185) (0.184) (0.185) (0.197) (0.196)
Political 0.510** 0.622** 0.614** 0.515* 0.665** 0.642**
  (0.239) (0.275) (0.275) (0.294) (0.312) (0.314)
Voluntary − 0.171 − 0.156 − 0.191 − 0.320 − 0.263 − 0.312
  (0.208) (0.214) (0.213) (0.246) (0.249) (0.247)
Conference   − 0.467* − 0.479   − 0.475 − 0.492
  (0.265) (0.266) (0.350) (0.345)
Museum 0.404 0.410 0.534 0.554
  (0.285) (0.285) (0.340) (0.339)
Book 0.055 0.072 − 0.102 − 0.076
  (0.233) (0.234) (0.238) (0.234)
News 0.349 0.309 0.3146 0.255
  (0.251) (0.250) (0.310) (0.317)
Travel − 0.147 − 0.147 − 0.226 − 0.226
  (0.219) (0.219) (0.229) (0.231)
Library − 0.138 − 0.134 − 0.107 − 0.110
  (0.205) (0.206) (0.215) (0.214)
Internet − 0.530   − 0.752**  
  (0.401)   (0.372)
Videogames 0.331* 0.281* 0.389** 0.317**
  (0.172) (0.168) (0.191) (0.190)
Constant 0.986 1.225 − 0.594 0.054 1.062 − 1.423
  (2.452) (3.053) (2.733) (2.322) (2.996) (2.802)
Observations 155 155 155 155 155 155
Adjusted R-squared 0.198 0.225 0.221  
  1. Dependent variable: Grade team part; standard errors (corrected for heteroscedasticity) are reported in parenthesis. Significance level: *** for p < 0.01, ** for p < 0.05, * for p < 0.10
  2. In the models (1) and (2) of Table 9, we repeat the regressions (5) and (8) of Table 5. In general, we find similar results with two specifications: Cultural Aggregated Team dummy has in both models a magnitude few less (+ 1.53 and + 1.58) and all two models explained better the variance of grades (adjusted R-squared = 0.199 and 0.225, respectively). In the model (3), we delete the variable Internet since less distinctive for aggregation (4.72 over 5 in Table 1). On this particular circumstance also, the results are similar to previous ones. Finally, in the models (4)–(6), we repeated the previous regressions (1)–(3) of Table 9 censoring the grades from 0 to 7, that is, the ones for which the test is not pass. By Tobit estimates, we find a substantial increment of grade for culturally aggregated students. In fact, the magnitude of Cultural Aggregated Team is + 1.83 in the full model (5)