Supplemental Material
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Individual
observer's data: EAZ (Experiment 2A)
The
tables below provide individual observer data for the blocks task, as
tab delimited text.
For each set, we provide one data file for all conditions
(illumination-constant and illuminant-changed combined).
Block selection data (Set A, Set B)
Data tables follow
this format:
Column 1: Condition code (NC for
illuminant-constant; CY for yellowish illuminant-change, CB for bluish
illuminant-change).
Column 2: Block number
Column 3: Trial type (denoted as a unique integer; refers to a
specific combination of target, competitor pair and illumination
condition)
Column 4: Target 1, SetA: "Gray", Set B: "Corn": first
competitor in the
competitor pair on a given trial (Convention for illumination-constant
condition: 1= C-2,
2 = C-1; 3 =
T; 4 = C+1; 5 = C+2; For illumination-changed condition 1= T,
2 = C1;
3 = C2;
4 = C3; 5 = R; 6 = C5; See Figure 2).
Column 5: Target 1, SetA: "Gray", Set B: "Corn": second competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 6: Target 1, SetA: "Gray", Set B: "Corn": competitor chosen by the
subject on a given trial (1 = the first competitor in a pair, 2 = the
second competitor in a pair).
Column 7: Target 2, SetA: "Rose", Set B: "Skin": first
competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 8: Target 2, SetA: "Rose", Set B: "Skin": second competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 9: Target 2, SetA: "Rose", Set B: "Skin": competitor chosen by the
subject on a given trial (1 = the first competitor in a pair, 2 = the
second competitor in a pair).
Column 10: Target 3, SetA: "Teal", Set B: "Lettuce": first
competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 11: Target 3, SetA: "Teal", Set B: "Lettuce": second competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 12: Target 3, SetA: "Teal", Set B: "Lettuce": competitor chosen by the
subject on a given trial (1 = the first competitor in a pair, 2 = the
second competitor in a pair).
Column 13: Target 4, SetA: "Green", Set B: "Bark": first
competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 14: Target
4, SetA: "Green", Set B: "Bark":
second competitor in the
competitor pair on a given trial (same convention as in Column 4).
Column 15: Target
4, SetA: "Green", Set B: "Bark":
competitor chosen by the
subject on a given trial (1 = the first competitor in a pair, 2 = the
second competitor in a pair).
Column
16: Reaction time in seconds (from the trial onset until the subject
made a choice).
Column 17: Session order number.
Note: NaN value for competitor chosen (in Columns 6, 9, 12 or 15)
indicates that no block from the source was assigned to this target
block (and the corresponding block in the workspace remained black)
or that the block that was assigned was not one of the two competitors
for this target (and was thus excluded from the analysis).
Figures
showing subject's choices matrices and inferred matches for each target
and conditon.
The
format of the figures is slightly different that in Figure 3A.
For each pairwise comparison of competitors the matrix shows the
proportion of time one competitor (vertical axis) is chosen relative to
the other (horizontal axis). The entries above
and below the diagonal in the matrices shown are not independent:
entries above the diagonal
are
obtained as 1 minus the corresponding entry below the diagonal.
Cells along the diagonal were set to 0.5, since we did not have
subjects
select between two identical tests.
The circles in
each matrix show the position of the subject’s selection-based matches
inferred from these responses. The color of the inferred match
indicates (for illustration purposes only) the target color.
Set A: Illuminant-constant,
Illuminant-changed (bluish).
Set B: Illuminant-constant,
Illuminant-changed (yellowish),
Illuminant-changed (bluish).
Figure
showing the relation between measured selection probabilities and those
predicted via MLDS procedure
Different
illumination condition is plotted in each row:
Set A (pdf): top -
illuminant-constant (NC); bottom -
illuminant-change to bluish (CB).
Set B (pdf): top -
illuminant-constant (NC); middle -
illuminant-change to yellowish (CY), bottom -
illuminant-change to bluish (CB)
Each
target is plotted in a different column (marked as T1 to T4). Each
subplot follows the same conventions as Figure 3B.