Quick Answer. Dirty condenser coils, evaporator fan motor failure or a defective start relay switch are common freezer problems that cause the freezer to malfunction or not freeze. Frosted-over evaporator coils, a worn-out condenser fan motor or a defective temperature control thermostat are also common culprits of a malfunctioning freezer.
Peer Review Definition. Peer review is the evaluation of creative work or performance by other people in the same field in order to maintain or enhance the quality of the work or performance in that field1.
So while peer review is a hallmark of science, it is not unique to science. 1  Peer-reviewed journals are publications in which scientific contributions have been vetted by experts in the relevant field. 2  Peer-reviewed articles provide a trusted form of scientific communication. Even if you are unfamiliar with the topic or the scientists who authored a particular study, you can trust peer-reviewed work to meet certain standards of scientific quality. Since scientific knowledge is cumulative and builds on itself, this trust is particularly important.