Now showing items 1-20 of 28

  • A Magnitude Effect in Temporal discounting with Hens

    Budenberg, Grace Joy (University of Waikato, 2014)
    This study aimed to determine whether a magnitude effect could be obtained in temporal discounting with brown shaver hens. Subjects responded in a classic self-control situation for the choice between a smaller-sooner ...
  • A Test of Weber's Law with Dogs

    Cliff, Jessica Helen (University of Waikato, 2013)
    This study investigated Weber’s Law through a temporal bisection procedure using domestic dogs as subjects, a previously untested species in temporal bisections. Six dogs were trained to response to the blue lever when the ...
  • A visual discrimination task to identify judgement bias in hens (Gallus gallus domesticus).

    Buchanan, Nicky (University of Waikato, 2016)
    This study aimed to investigate whether the use of a judgement bias task with differential reinforcement was suitable to assess emotional states (positive or negative affect) in domestic hens. Six hens were trained to ...
  • An Analysis of the Impact of Reinforcement on Response Variability on Multiple Behavioural Dimensions

    Kong, Xiuyan (University of Waikato, 2016)
    A series of four experiments were carried out to examine whether increases in variability in responding on some dimensions of a behaviour as a result of reinforcement generalised to other dimensions of the same behaviour. ...
  • An Investigation into Establishing (Motivating) Operations

    Jackson, Surrey Merryn Kate (University of Waikato, 2017)
    Motivating Operations (MOs) are a fundamental concept in behavioural psychology. Despite this, empirical research into MOs is lacking. The overall aim of this thesis is to contribute to the experimental literature base for ...
  • An Investigation of Suboptimal Choice by Possums

    Hill, Stephanie Anne (University of Waikato, 2016)
    This study addressed the question of whether an overall preference for a suboptimal choice, previously found in pigeons (Stagner and Zentall, 2010), would be replicated with five brushtail possums. In Part One of this ...
  • Assessing the food preference of the brushtail possum (Trichosurus vulpecular) using fixed-ratio schedules

    Jenkins, Ayla Nicky Te Rau O Riwa (University of Waikato, 2014)
    The quality of different foods has been found in previous studies to effect an animal’s performance on fixed-ratio schedules. Foods that are of a higher quality should maintain behaviour to larger fixed-ratio values than ...
  • Behaviour Determinants of the 'Choose-Short Effect'

    Hoogstraten, Sarah Michelle (University of Waikato, 2015)
    This study aimed to elucidate the mechanisms behind the behavioural phenomenon called the 'choose-short effect' by exploring the hen’s ability to discriminate temporal stimuli in delayed match-to-sample DMTS) procedure. ...
  • Determinants of timing performance on the peak procedure

    McHugh, Mark Edward (University of Waikato, 2012)
    The performance of brown shaver hens gallus gallus domesticus, was investigated using a peak procedure as a method to examine the timing abilities of an animal. Peak procedure involves using a combination of peak interval ...
  • The Effect of Caffeine Deprivation on Decisions about Future Events in Humans

    Frankish, Rosanna P.J. (University of Waikato, 2011)
    The current study used the stimulant model, caffeine, to assess the effects of stimulant deprivation on impulsivity in humans. Previous research has found substance abusers express greater preference for immediate outcomes ...
  • The Effect of Effort: An analysis of Killeen's (1994) Mathematical Principles of Reinforcement

    Bjarnesen, Rebecca Claire (University of Waikato, 2011)
    Mathematical Principles of Reinforcement (MPR, Killeen, 1994) is a mathematical model comprising three main concepts; an animal’s arousal to behaviour based on its motivation for a particular reinforcer, time and energy ...
  • Escape from the peak procedure

    Juekarun, Phloiuma (University of Waikato, 2014)
    The peak procedure is a timing procedure used to measure the ability of animals to time intervals. The peak procedure consists of fixed interval (FI) trials and some non-reinforced or extinction trials (EXT). Typically, ...
  • Food preferences and demand in the brushtail possum (Trichosurus vulpecula)

    Cameron, Kristie Elizabeth (University of Waikato, 2014)
    The common brushtail possum (Trichosurus vulpecula) has been reported to eat vegetation, fruit, invertebrates, and occasionally fungi, eggs and meat in the wild. The relative preference between food types found in the wild, ...
  • An investigation of two behavioural economic approaches to evaluating reinforcer value

    Lim, Bee Lan Linda (University of Waikato, 2010)
    This study compares two approaches for comparing the value of two different reinforcers. The own-price demand method compares the changes in consumption of the reinforcers resulting from increases in the number of responses ...
  • Methodologies for assessing domestic hens' preferences for sounds

    Jones, Amy Rebecca (University of Waikato, 2011)
    A series of five experiments assessed the effects of different sounds on the choice behaviour of domestic hens and chicks using a range of procedures. The first experiment compared the effects of white noise on hens’ ...
  • Motivation, constraint and association: an analysis of Killeen's (1994) mathematical principles of reinforcement.

    Armstrong, Rebecca Theresa (University of Waikato, 2015)
    Mathematical principles of reinforcement (MPR; Killeen, 1994) is a useful model for predicting and describing behaviour. MPR is based upon three general principles represented by three independent parameters in the model: ...
  • Possum Food Preferences under Progressive-Ratio and Concurrent-Schedules of Reinforcement

    Cronin, Ian Raymond (University of Waikato, 2012)
    Three experiments compared various ways of examining food preferences in the common brushtail possum (Trischosurus vulpecula). The first experiment compared the preferences obtained between four foods using paired-stimulus ...
  • The Role of Differential outcomes on Gambling Behaviour

    Staples, Krystal Nell (University of Waikato, 2012)
    This research is based on the conduction of a series of experiments that systematically occurred based on participants performance on a gambling simulation. In Experiment 1, a Roulette simulation allowed the manipulation ...
  • Suboptimal Choice Behaviour across Different Reinforcement Probabilities

    Yang, Le (University of Waikato, 2015)
    Six adult roosters’ choice behaviour was investigated across a series of five experimental conditions and a series of replication of the same five experimental conditions. Stagner and Zentall (2010) found that pigeons ...
  • Suboptimal Choice Behaviour in Hens

    Ngatai, Karmen Louise (University of Waikato, 2013)
    Choice performances of six Brown Shaver hens were studied across three series of conditions, using a partial replication of Stagner and Zentall’s (2010) procedure. Hens chose between two alternatives during choice-trials. ...