IV1Investigator 1st Class (USCG Rating)
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The Co+ + accurately referenced both the Interaction and IV1 shown in the graph, and the Co- + inaccurately referenced the Interaction, but accurately referenced the IV1.
(c) Discrimination of nonrelational elements (IV1).
Each stimulus control topography established in a, b, and c was necessary to document control by the interaction and IV1. Control of behavior by each in isolation, however, does not provide definitive documentation of concurrent control by both elements.
Thus, control by a given non-relational element (such as IV1) was established only in the context of graphs and descriptions of one type of interaction (no interaction).
For instance, control by the interaction of graphs and descriptions of no interaction was established in combination with IV1, and this was akin to matrix training (Goldstein, 1983, 1985).
Figure 2 provides one example of this type of test trial in which information is used to evaluate control of behavior by the relation between the independent variables and the name of the Independent Variable 1 (REL & IV1).
When a number of trials like these are presented, different patterns of responding to the three comparisons indicate (a) selective discriminative control by the relation between the independent variables in combination with the name of IV1, (b) selective discriminative control by the relation but not by the name of IV1, or (c) control by the name of IV1.
The Co+ contains correct information about the relation between the two independent variables and the correct name of IV1 (REL+ & IV1+).
Table 1 Pattern of Comparison Selection That Indicates Control by the REL and IV1 Co+ Co-1 Co-2 (REL+, IV+) (REL+, IV1-) (REL-, IV1+) Source of control + + + - - + REL and IV1 100 0 0 REL only 50 50 0 IV1 only 50 0 50 Note.
Because both of these stimuli are selected with equal likelihood, the performances are uncorrelated with the presence of the accurate name of IV1. Therefore, selection could not be under the control of the name of IV1.
The Co+ and Co-2 contain the correct name of IV1. In contrast, Co-1 contains an inaccurate name of IV1.
A comprehensive measure of control by all elements included in a graph can be obtained by conducting tests for the relation and each of the other elements: REL and IV1, REL and IV2, REL and dIVlo, REL and dIVhi, and REL and DV.