However, certain wasp species such as pollen wasps have similar behaviours, and a few species of bee scavenge from carcases to feed their offspring. The world's largest species of bee is thought to be the Indonesian resin bee Megachile pluto, whose females can attain a length of 39 millimetres (1.54 in).
For a Ph.D. in Psychology: Most Ph.D. programs require at least 5 to 7 years to complete. In addition to regular coursework, you may also be expected to complete an internship or supervised residency. The program usually culminates in completing an original research project or dissertation.
Doctoral Program Lengths. Most doctoral programs take between four and seven years to complete, although schools may allow students up to 11 years to earn a doctorate degree. If you find that you need more time, some schools will grant extensions for extenuating circumstances.he amount of time it takes to finish a doctoral degree program varies depending on a number of factors, such as the amount of credits you need or whether you attend part-time or full-time.