We assessed the emergence of visual-visual conditional discriminations following training of vocal tact and intraverbal relations. Ten preschool-age children learned to vocally tact six visual stimuli, A1 through B3. Next, they learned to respond intraverbally to the dictated names of A1, A2, and A3 by vocalizing the names of B1, B2, and B3, respectively. Emergent A-B and B-A relations were tested in a visual-visual match-to-sample (MTS) task. Five of ten participants passed the test, with or without a prompt to tact the sample stimulus. Four of the five failed a reverse intraverbal test that involved responding to dictated names of B stimuli by vocalizing names of A stimuli. The remaining participants failed the MTS test, apparently due to failures to maintain the trained vocal responses throughout testing. Accurate MTS performance in the absence of bidirectional intraverbal relations appears to contradict Horne and Lowe's (1996) analysis of the possible role of intraverbal naming in emergent stimulus control.
This study was a systematic replication and extension of Fisher, Kodak, and Moore (2007), in which a picture prompt embedded into a least‐to‐most prompting sequence facilitated acquisition of auditory‐visual conditional discriminations. Participants were 4 children who had been diagnosed with autism; 2 had limited prior receptive skills, and 2 had more advanced receptive skills. We used a balanced design to compare the effects of picture prompts, pointing prompts, and either trial‐and‐error learning or a no‐reinforcement condition. In addition, we assessed the emergence of vocal tacts for the 2 participants who had prior tact repertoires. Picture prompts enhanced acquisition for all participants, but there were no differential effects on tact emergence. The results support a generality of the effect reported by Fisher et al. and suggest that a variety of learners may benefit from the incorporation of picture prompts into auditory‐visual conditional discrimination training.
We evaluated the effects of collateral response requirements during listener training on the emergence of vocal foreign-language tacts and intraverbals among 4-and 5-yearold children. In Experiment 1, participants were first exposed to auditory-visual match-to-sample training without collateral response requirements. Four participants did not perform to criterion in probes for derived vocal responses, and were exposed to a two-phase intervention that involved adding echoic and native-language tact requirements to match-tosample trials. Performance did not improve as a result of the intervention. However, all participants passed tact probes after receiving direct tact and intraverbal training with a subset of the stimuli, and two of four participants also passed the intraverbal probes. Experiment 2 addressed potential limitations of Experiment 1 with three additional participants, but collateral response requirements still failed to affect the emergence of tacts and intraverbals.
The Analysis of Verbal Behavior (TAVB) has been published since 1982, and during this time, interest in verbal behavior research appears to have increased substantially within behavior analysis. The purpose of the present analysis was to assess the influence of TAVB on the field by (a) counting citations of TAVB articles in the Journal of the Experimental Analysis of Behavior (JEAB) and the Journal of Applied Behavior Analysis (JABA) from 1983 through 2007, (b) examining which other journals cite TAVB, and (c) calculating impact-factor estimates for 2003 through 2007. Citations of TAVB articles began to appear in JEAB and JABA in the late 1980s to early 1990s, and by the end of 2007, almost a third of all articles published in TAVB had been cited in either JEAB or JABA. Other journals that cite TAVB include The Behavior Analyst and The Psychological Record. The estimated impact factor ranged from 0.267 to 0.600. Strategies for increasing the impact of TAVB are discussed.
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