Technical glitches aside, the set appeared unfinished.
The first set of answers appears below and the second set appears here.
After offset of the memory set, the fixation cross appeared for 200 ms, after which two synchronized and simultaneous stimulus streams started.
The VSTM and selective attention tasks were the same as in Experiment 1a, except that the selective attention task now appeared following a blank screen presented for 1.85 s after the memory set display offset (see Fig. 1b).
Participants were instructed to maintain the memory set squares throughout the retention interval and respond whether a memory probe square appearing at the end of the interval was the same color as or a different color from the color of the square at the same location in the memory set.
The memory probe appeared next, comprising a single square presented in one of the occupied memory set positions.
Participants were instructed to verbally rehearse the memory set letters throughout the retention interval and to respond whether a memory probe letter appearing at the end of the interval was present or absent in the trial set.
After the delay, a probe word appeared and the participant made a manual response indicating whether or not the probe was included in the memory set.
The memory probe consisted of one letter equally likely to appear in any of the six locations in the high-load condition and always presented at the location of the memory set item in the low-load condition.
The logarithmic relationship between memory set size and hybrid search RT holds for large memory set sizes of 100 (Wolfe, 2012a) or even 500 specific items (Wolfe, Boettcher, Josephs, Cunningham, & Drew, 2015) and appears to be based on the recognition of items as targets rather than a more basic feeling of 'familiarity' (Wolfe, Boettcher, Josephs, Cunningham, & Drew, 2015).
