Einblicke in den Nationalpark Eifel
Vortrag mit Parkleiter Michael Lammertz begeisterte Jugendliche am Mechernicher Gymnasium Am Turmhof
Henri Grüger
Don't be afraid to give up the good to go for the great
In operant conditioning, a reinforcement (by reward) or instead a punishment is given after a given behavior, changing the frequency and/or form of that …