Research groups
Research projects
Completed research projects
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Blocking of stimulus control and the conditioning of new reinforcers
How can social consequences be established as conditioned reinforcers in children with autism, and what can challenge the establishing?
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Effects of reinforcement on behavioral variability
The effect of reinforcement and extinction on behavioral variability and the effects reinforcement and punishment have on rule-governed insensitivity.
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Pro-social behavior in rats
We studied pro-social and empathetic behavior in rats by having one rat restrained in a plastic tube and a cagemate that could release the rat.
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Subjective discounting of delayed rewards
The project examines preference for immediate versus delayed rewards in animal models and in humans to identify variables that control choice.
Publications and research
Scientific publications
Olaff, Heidi Skorge
;
Holth, Per
(2025).
Acquisition of incidental bidirectional naming: Isolating the effects of probing and mixed-operant instruction.
The Analysis of Verbal Behavior.
Vol. 41.
https://doi.org/10.1007/s40616-025-00221-1
Olaff, Heidi Skorge
;
Vandbakk, Monica
;
Holth, Per
(2021).
Blocking of Stimulus Control in Children with Autism.
The Psychological Record.
Vol. 72.
https://doi.org/10.1007/s40732-020-00454-7
Holth, Per
(2021).
A retrospective 60-year review of Murray Sidman’s Tactics of Scientific Research and some of its influence on behavior analysis.
Journal of The Experimental Analysis of Behavior.
Vol. 115.
https://doi.org/10.1002/jeab.645
Johnson, Cammarie; Iversen, Iver H.; Kenyon, Paula;
Holth, Per
; Souza, Deisy das Graças de
(2020).
Murray Sidman: A Life of Giving.
Journal of Applied Behavior Analysis.
https://doi.org/10.1002/jaba.718
Olaff, Heidi Skorge
;
Holth, Per
(2020).
The Emergence of Bidirectional Naming Through Sequential Operant Instruction Following the Establishment of Conditioned Social Reinforcers.
The Analysis of Verbal Behavior.
https://doi.org/10.1007/s40616-019-00122-0
Vandbakk, Monica
;
Olaff, Heidi Skorge
;
Holth, Per
(2020).
Blocking of Stimulus Control and Conditioned Reinforcement.
The Psychological Record.
Vol. 70.
https://doi.org/10.1007/s40732-020-00393-3
Nergaard, Siv Kristin;
Holth, Per
(2020).
A Critical Review of the Support for Variability as an Operant Dimension.
Perspectives on Behavior Science.
Vol. 43.
https://doi.org/10.1007/s40614-020-00262-y
Holth, Per
(2020).
Operational Definitions of Psychological Terms.
Operants.
https://hdl.handle.net/11250/3699655
Vandbakk, Monica
;
Olaff, Heidi Skorge
;
Holth, Per
(2019).
Conditioned Reinforcement: the Effectiveness of Stimulus—Stimulus Pairing and Operant Discrimination Procedures.
The Psychological Record.
Vol. 69.
https://doi.org/10.1007/s40732-018-0318-8
Furrebøe, Elise Frølich;
Holth, Per
;
Sandaker, Ingunn
(2019).
An exploratory study of a real-time choice procedure.
European Journal of Behavior Analysis (EJOBA).
Vol. 20.
https://doi.org/10.1080/15021149.2019.1575033