The most likely candidate
for that climatic variable force that comes to mind is solar variability (because I can think of no other force that can change or reverse in a different trend
often enough, and quick enough to account
for the historical climatic record) and the primary and secondary effects associated with this solar variability which I feel are a significant player in glacial / inter-glacial cycles, counter climatic trends when taken into
consideration with these
factors which are, land / ocean arrangements, mean land elevation, mean magnetic field strength of the earth (magnetic excursions), the mean state of the climate (average global temperature), the initial state of the earth's climate (how close to interglacial - glacial threshold condition it is) the state of random terrestrial (violent volcanic eruption, or a random atmospheric circulation / oceanic pattern that feeds upon itself possibly) / extra terrestrial events (super-nova in vicinity of earth or a random impact) along with Milankovitch Cycles.
Internalizing and externalizing problems in children with ASD have been associated with several parental and family
factors, important
considerations given that individual child characteristics
often account
for only a small amount of variance in psychopathology (Gadow et al. 2008; Mayes et al. 2011; Sukhodolsky et al. 2008).