“…Similar conditional discrimination procedures with two and three samples have been designed for (a) demonstrating selections between two comparisons according to the relations previously established between the two stimuli presented as samples (Pérez‐González, 1994); (b) demonstrating basic learning principles involved in joint (or common) control of two stimuli over comparison selection (Alonso‐Álvarez & Pérez‐González, 2006, 2013; Pérez‐González & Alonso‐Álvarez, 2008); (c) demonstrating further class membership according to the context (e.g., DeRosse & Fields, 2010; Junior & Matos, 1999; Rehfeldt, 2003); (d) classifying objects according to two criteria (Sigurdadóttir et al, 2012); (e) demonstrating emergence of intraverbals after teaching two sets of related operants with AB and AC elements (e.g., Belloso‐Díaz & Pérez‐González, 2015; Carp & Petursdottir, 2012, 2015; Pérez‐González et al, 2008, 2014; Zaring‐Hinkle et al, 2016—see reviews and analysis in Pérez‐González, 2019, 2020); (f) illustrating putative principles involved in cognition as proposed by the advocates of relational frame theory (e.g., Steele & Hayes, 1991); and other purposes. The authors of these and similar studies pointed out the strong functional analogies between the procedures and results used and multiple cognitive phenomena such as establishing relations between words and objects according to contextual stimuli (e.g., Bush et al, 1989), responding “yes” and “no” in a generalized way (e.g., Pérez‐González, 1994), instruction following (e.g., Pérez‐González & Martínez, 2022), concept formation and classification (Wulfert et al, 1994), deductive reasoning (e.g., Belloso‐Díaz & Pérez‐González, 2015; Carp & Petursdottir, 2012, 2015; Pérez‐González et al, 2008), and analogical reasoning (e.g., Barnes et al, 1997; Carpentier et al, 2003a, 2004; García et al, 2008; Pérez Fernández & García García, 2008; Ruiz & Luciano, 2011).…”