{TAIL ~ Another way} of querying {HEAD ~ the observer} is to employ the psychophysical methods outlined in previous sections 
{ TAIL ~ Another way } of querying { HEAD ~ the observer } is to employ the psychophysical methods outlined in previous sections
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH