Importance of Problems Faced
nMusch & Reips (2000)
nIn descending order
nLack of control of behavior 3.6
nLack of control of motivation 3.4
nInability to ask questions 3.3
nNo control over hardware 2.9
nNonrepresentative sample 2.8
nEthical problems 1.5
Probably depends upon the type of studies done in this first phase.