“…In [5], the authors extended the above results to generalized derivations. In [2], Albas proved that if R is a prime ring with characteristic different from two and (F, d) is a generalized derivation such that F ([x, y]) ± [F (x), F (y)] = 0 for all x, y ∈ R, then R is commutative or d = 0 or d = −I id , where I id is the identical mapping on R. Hence, it should be interesting to study the commutativity of prime and semiprime rings admitting suitably constrained derivations, generalized derivations and so on.…”