This definition can be contrasted with that proposed by life-span developmental psychologists: Development is a life-long process beginning at conception and ending at death (Honzik, 1984, p. 309). Development is thus extended to include the whole of life.
A cockroache can live up to 10 days without its head. In fact it doesn't die of suffication but of dehydration.  a cockroach can live up to a week without it's head because â¦it's brain is in its body. 1 person found this useful.
And the cockroach actually breathes through every segment of its body except the head, so decapitation won't even deprive it of oxygen. Roaches also require much less food than humans or other warm-blooded animals do. A roach can live for weeks on a single meal, so a decapitated roach probably won't be in any immediate danger of starvation.