. ▁E valu ators ▁need ▁to ▁work ▁out ▁where ▁the ▁problem ▁is ▁located ▁and ▁how ▁big ▁it ▁is . ▁Point ing ▁out ▁that ▁a ▁problem ▁exists ▁is ▁much ▁easier ▁than ▁having ▁to ▁specify ▁where ▁it ▁is ▁located ▁and ▁how ▁r ife ▁it ▁is . ▁Ros si , ▁Lip sey ▁& ▁Fre eman ▁( 2 0 0 4 ) ▁gave ▁an ▁example ▁that : ▁a ▁person ▁ident ifying ▁some ▁batter ed ▁children ▁may ▁be ▁enough ▁evidence ▁to ▁persu ade ▁one ▁that ▁child ▁ab use ▁exists . ▁But ▁indicating ▁how ▁many ▁children ▁it ▁affect s ▁and ▁where ▁it ▁is ▁located ▁ge ograph ically ▁and ▁soci ally ▁would ▁require ▁knowledge ▁about ▁ab used ▁children , ▁the ▁characteristics ▁of ▁perpet rat ors ▁and ▁the ▁impact ▁of ▁the ▁problem ▁throughout ▁the ▁political ▁authority ▁in ▁question . ▁ ▁This ▁can ▁be ▁difficult ▁considering ▁that ▁child ▁ab use ▁is ▁not ▁a ▁public ▁behavior , ▁also ▁keeping ▁in ▁mind ▁that ▁estimates ▁of ▁the ▁rates ▁on ▁private ▁behavior ▁are ▁usually ▁not ▁possible ▁because ▁of ▁factors ▁like ▁un report ed ▁cases . ▁In ▁this ▁case ▁evalu ators ▁would ▁have ▁to ▁use ▁data ▁from ▁several ▁sources ▁and ▁apply ▁different ▁approaches ▁in ▁order ▁to ▁estimate ▁inc idence ▁rates . ▁There ▁are ▁two ▁more ▁questions ▁that ▁need ▁to ▁be ▁answered : ▁E valu ators ▁need ▁to ▁also ▁answer ▁the ▁’ how ’ ▁and ▁‘ what ’ ▁questions ▁The ▁‘ how ’ ▁question ▁requires ▁that ▁evalu ators ▁determine ▁how ▁the ▁need ▁will ▁be ▁addressed . ▁Having ▁identified ▁the ▁need ▁and ▁having ▁familiar ized ▁ones elf ▁with ▁the