ments ▁▁▁▁ ▁In ▁ 1 9 7 5 ▁L azon ick ▁was ▁h ired ▁as ▁an ▁assistant ▁professor ▁in ▁the ▁Harvard ▁Econom ics ▁Department , ▁where ▁he ▁taught ▁compar ative ▁economic ▁development , ▁economic ▁history , ▁and ▁the ▁history ▁of ▁economic ▁analysis , ▁all ▁from ▁a ▁perspective ▁that ▁was ▁critical ▁of ▁ne oc lass ical ▁econom ics . ▁In ▁ 1 9 8 0 ▁he ▁was ▁promoted ▁to ▁associate ▁professor ▁of ▁econom ics . ▁In ▁ 1 9 8 2 - 8 3 ▁he ▁was ▁a ▁visit ing ▁professor ▁of ▁econom ics ▁at ▁the ▁University ▁of ▁Toronto . ▁In ▁ 1 9 8 4 - 8 5 ▁L azon ick ▁held ▁the ▁Harvard - New com en ▁Fellow ship ▁in ▁Business ▁History ▁at ▁Harvard ▁Business ▁School ▁( H BS ) ▁and ▁became ▁an ▁initial ▁member ▁of ▁the ▁H BS ▁" Bus iness ▁History ▁Group ", ▁working ▁with ▁Alfred ▁D . ▁Ch and ler , ▁Jr . ▁He ▁remained ▁as ▁a ▁research ▁fellow ▁at ▁H BS ▁in ▁ 1 9 8 5 - 8 6 ▁with ▁fund ing ▁from ▁the ▁German ▁Marshall ▁Fund ▁of ▁the ▁United ▁States ▁and ▁the ▁National ▁Science ▁Foundation . ▁ ▁In ▁ 1 9 8 5 ▁L azon ick ▁was ▁appointed ▁to ▁a ▁ten ured ▁professor ship ▁of ▁econom ics ▁at ▁Bar n ard ▁College ▁of ▁Columbia ▁University . ▁He ▁was ▁also ▁a ▁member ▁of ▁the ▁Gr adu ate ▁Fac ulty ▁of ▁Columbia ▁University , ▁teaching ▁a ▁Ph D ▁course ▁in ▁economic ▁history ▁in ▁the ▁Columbia ▁Econom ics ▁Department ▁and