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.
Q: How long can a cockroach live without its head? A: Large blaberid species can live headless for a month or longer. The German cockroach can be maintained for a week without its head. Decapitation results in death because of infection, or sepsis, from invasion of the hemocoel by gut microbes, and water loss, either from bleeding or water evaporation from the cut surface.