Verification was more thorough participants spent more time and checked more places (i.e., greater number of fixations, scan path lengths and percentage of leads re-examined).
Future studies should explore other measures of visual behaviour (e.g. fixation duration, scanning paths) to test the hypothesis of a visual processing deficit in infants who subsequently develop autism.
As hypothesized, checklist use was associated with longer verification times, greater number of fixations, longer scan paths, greater ratio of intra to extra-lead saccades, greater ratio of local to global saccades and greater proportion of 12 leads with at least one fixation (all p's < 0.02, Table 1).
My Maserati fixation goes way back.
Most of the existing research on the subject has employed discrete scan path metrics (fixation numbers, fixation duration, saccade amplitude, etc. [27], [31], [32]), to characterize scan path patterns.
Nevertheless, the experienced workers were more confident in identifying hazards, they exhibited fewer fixations, and their scan paths for assessing hazards were more consistent.
In particular, orbitofrontal lesion has been linked to increased re-fixation in search scan paths [7].
There were eight independent scan path metrics: fixation number (FNum), diameter, skewness of edge weight distribution (SKW), kurtosis of edge weight distribution (KUR), average saccade velocity (AGV), saccade amplitude (SAP), saccade angle (SAG) and peak velocity of saccade (PKV).
"Stay tuned because Pam and I are on a path to do nitrogen fixation in the same sort of way we've just done water splitting," he said.
As can be seen in Table 1, scan paths of more fixations in VB were related to smaller Fielders, indicating a loose pattern.
