Papers by Julie Anne Seguin
Psychonomic Bulletin & Review, Aug 14, 2012
Using naturalistic scenes, we recently demonstrated that confidence-accuracy relations differ dep... more Using naturalistic scenes, we recently demonstrated that confidence-accuracy relations differ depending on whether recognition responses are based on memory for a specific feature or instead on general familiarity: When confidence is controlled for, accuracy is higher for familiarity-based than for feature-based responses. In the present experiment, we show that these results generalize to face recognition. Subjects studied photographs of scenes and faces presented for varying brief durations and received a recognition test on which they (1) indicated whether each picture was old or new, (2) rated their confidence in their response, and (3) indicated whether their response was based on memory for a feature or on general familiarity. For both stimulus types, subjects were more accurate and more confident for their feature-based than for their familiarity-based responses. However, when confidence was held constant, accuracy was higher for familiaritybased than for feature-based responses. These results demonstrate an important similarity between face and scene recognition and show that for both types of stimuli, confidence and accuracy are based on different information.
Journal of Experimental Psychology: Learning, Memory and Cognition, 2011
Wells for their help with data collection. John Dunn, Timothy Perfect, and two anonymous reviewer... more Wells for their help with data collection. John Dunn, Timothy Perfect, and two anonymous reviewers provided helpful comments on earlier versions of the manuscript.
Neuropsychiatric Disease and Treatment, Dec 1, 2008
Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of ... more Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of neurogenesis, are provoked by stressful insults and may occur in depression. Although corticoids likely contribute to stressor-induced reductions of neurogenesis, other signaling messengers, including pro-infl ammatory cytokines might also be involved. Accordingly, the present investigation assessed whether three proinfl ammatory cytokines, namely interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α) (associated with depression) infl uenced cellular proliferation within the hippocampus. In this regard, systemic administration of TNF-α reduced 5-bromo-2-deoxyuridine (BrdU) labeling within the hippocampus, whereas IL-1β and IL-6 had no such effect. However, repeated but not a single intra-hippocampal infusion of IL-6 and IL-1β actually increased cellular proliferation and IL-6 infusion also enhanced microglial staining within the hippocampus. Yet, no changes in doublecortin expression were apparent, suggesting that the cytokine did not infl uence the birth of cells destined to become neurons. Essentially, the route of administration and chronicity of cytokine administration had a marked infl uence upon the nature of hippocampal alterations provoked, suggesting that cytokines may differentially regulate hippocampal plasticity in neuropsychiatric conditions.
Dynamic effects of emotion on perceived durations: A temporal bisection study
PsycEXTRA Dataset, 2010
Visual memory: Confidence, accuracy, and recollection of specific details
PsycEXTRA Dataset, 2009
With the rapid growth of large language models, conversational recommender systems (CRSs) are on ... more With the rapid growth of large language models, conversational recommender systems (CRSs) are on the rise. When receiving a CRS recommendation, one may encounter phrases of varying confidence levels such as "you might like.. . " or "I think you will like.. . , " but to the best of our knowledge, no work has investigated how the pattern of confidence signals from one recommendation to the next affects trust in and reliance on CRSs. In a mixed-methods user study, we explore how 30 participants interact with two Wizard of Oz music CRSs that grow increasingly confident, but only one uses natural language and color-coding to communicate confidence, which is accurate, random, always low, or always high. Through semi-structured interviews, survey responses, and recommendation ratings, we find evidence suggesting that an accurate confidence signal generates the greatest increase in trust-related metrics without encouraging over-reliance but potentially under-reliance. Furthermore, we identify design guidelines for CRS confidence signals associated with each trust-related metric: desire to use, perceived transparency, perceived ability, perceived benevolence, and perceived anthropomorphism. CCS CONCEPTS • Human-centered computing → Empirical studies in HCI; • Computing methodologies → Artificial intelligence; • Information systems → Recommender systems.
The author has granted a non exclusive license allowing Library and Archives Canada to reproduce,... more The author has granted a non exclusive license allowing Library and Archives Canada to reproduce, publish, archive, preserve, conserve, communicate to the public by telecommunication or on the Internet, loan, distribute and sell theses worldwide, for commercial or non commercial purposes, in microform, paper, electronic and/or any other formats. AVIS: L'auteur a accorde une licence non exclusive permettant a la Bibliotheque et Archives Canada de reproduire, publier, archiver, sauvegarder, conserver, transmettre au public par telecommunication ou par I'lnternet, preter, distribuer et vendre des theses partout dans le monde, a des fins commerciales ou autres, sur support microforme, papier, electronique et/ou autres formats. i * i Canada Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
Upon the Route and Chronicity
Proinfl ammatory cytokines differentially infl uence
2023 ACM Conference on Fairness, Accountability, and Transparency
With the rapid growth of large language models, conversational recommender systems (CRSs) are on ... more With the rapid growth of large language models, conversational recommender systems (CRSs) are on the rise. When receiving a CRS recommendation, one may encounter phrases of varying confidence levels such as "you might like.. . " or "I think you will like.. . , " but to the best of our knowledge, no work has investigated how the pattern of confidence signals from one recommendation to the next affects trust in and reliance on CRSs. In a mixed-methods user study, we explore how 30 participants interact with two Wizard of Oz music CRSs that grow increasingly confident, but only one uses natural language and color-coding to communicate confidence, which is accurate, random, always low, or always high. Through semi-structured interviews, survey responses, and recommendation ratings, we find evidence suggesting that an accurate confidence signal generates the greatest increase in trust-related metrics without encouraging over-reliance but potentially under-reliance. Furthermore, we identify design guidelines for CRS confidence signals associated with each trust-related metric: desire to use, perceived transparency, perceived ability, perceived benevolence, and perceived anthropomorphism. CCS CONCEPTS • Human-centered computing → Empirical studies in HCI; • Computing methodologies → Artificial intelligence; • Information systems → Recommender systems.
Triptech: A Method to Evaluate Early Design Concepts
Triptech: A Method for Evaluating Early Design Concepts
Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems
Measuring user experience (UX) is an important part of the design process, yet there are few meth... more Measuring user experience (UX) is an important part of the design process, yet there are few methods to evaluate UX in the early phases of product development. We introduce Triptech, a method used to quickly explore novel product ideas. We present how it was used to gauge the frequency and importance of user needs, to assess the desirability and perceived usefulness of design concepts, and to draft UX requirements for Now Playing-an on-device music recognition system for the Pixel 2. We discuss the merits and limitations of the Triptech method and its applicability to tech-driven innovation practices.
Neuropsychiatric Disease and Treatment, Apr 8, 2009
Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of ... more Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of neurogenesis, are provoked by stressful insults and may occur in depression. Although corticoids likely contribute to stressor-induced reductions of neurogenesis, other signaling messengers, including pro-inflammatory cytokines might also be involved. Accordingly, the present investigation assessed whether three proinflammatory cytokines, namely interleukin-1beta (IL-1beta), IL-6, and tumor necrosis factor-alpha (TNF-alpha) (associated with depression) influenced cellular proliferation within the hippocampus. In this regard, systemic administration of TNF-alpha reduced 5-bromo-2-deoxyuridine (BrdU) labeling within the hippocampus, whereas IL-1beta and IL-6 had no such effect. However, repeated but not a single intra-hippocampal infusion of IL-6 and IL-1beta actually increased cellular proliferation and IL-6 infusion also enhanced microglial staining within the hippocampus. Yet, no change...
The Effect of Emotion on Time Perception for Complex Visual Stimuli
Recognizing Old and Conjunction Faces: Factors Influencing Confidence and Accuracy
PsycEXTRA Dataset, 2013
Dynamic effects of emotion on perceived durations: A temporal bisection study
PsycEXTRA Dataset, 2000
Does Time Fly When You're Having Fun?
PsycEXTRA Dataset, 2000
Neuropsychiatric Disease and Treatment, 2008
Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of ... more Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of neurogenesis, are provoked by stressful insults and may occur in depression. Although corticoids likely contribute to stressor-induced reductions of neurogenesis, other signaling messengers, including pro-infl ammatory cytokines might also be involved. Accordingly, the present investigation assessed whether three proinfl ammatory cytokines, namely interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α) (associated with depression) infl uenced cellular proliferation within the hippocampus. In this regard, systemic administration of TNF-α reduced 5-bromo-2-deoxyuridine (BrdU) labeling within the hippocampus, whereas IL-1β and IL-6 had no such effect. However, repeated but not a single intra-hippocampal infusion of IL-6 and IL-1β actually increased cellular proliferation and IL-6 infusion also enhanced microglial staining within the hippocampus. Yet, no changes in doublecortin expression were apparent, suggesting that the cytokine did not infl uence the birth of cells destined to become neurons. Essentially, the route of administration and chronicity of cytokine administration had a marked infl uence upon the nature of hippocampal alterations provoked, suggesting that cytokines may differentially regulate hippocampal plasticity in neuropsychiatric conditions.
Neuropsychiatric Disease and Treatment
Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of ... more Disturbances of hippocampal plasticity, including impaired dendritic branching and reductions of neurogenesis, are provoked by stressful insults and may occur in depression. Although corticoids likely contribute to stressor-induced reductions of neurogenesis, other signaling messengers, including pro-inflammatory cytokines might also be involved. Accordingly, the present investigation assessed whether three proinflammatory cytokines, namely interleukin-1beta (IL-1beta), IL-6, and tumor necrosis factor-alpha (TNF-alpha) (associated with depression) influenced cellular proliferation within the hippocampus. In this regard, systemic administration of TNF-alpha reduced 5-bromo-2-deoxyuridine (BrdU) labeling within the hippocampus, whereas IL-1beta and IL-6 had no such effect. However, repeated but not a single intra-hippocampal infusion of IL-6 and IL-1beta actually increased cellular proliferation and IL-6 infusion also enhanced microglial staining within the hippocampus. Yet, no change...
Different Confidence–Accuracy Relationships for Feature-Based and Familiarity-Based Memories
Journal of Experimental Psychology-learning Memory and Cognition, 2011
Participants studied naturalistic pictures presented for varying brief durations and then receive... more Participants studied naturalistic pictures presented for varying brief durations and then received a recognition test on which they indicated whether each picture was old or new and rated their confidence. In 1 experiment they indicated whether each "old"/"new" response was based on memory for a specific feature in the picture or instead on the picture's general familiarity; in another experiment, we defined pictures that tended to elicit feature versus familiarity responses. Thus, feature/familiarity was a dependent variable in 1 experiment and an independent variable in the other. In both experiments feature-based responses were more accurate than those that were familiarity based, and confidence and accuracy increased with duration for both response types. However, when confidence was controlled for, mean accuracy was higher for familiarity-based than for feature-based responses. The theoretical implication is that confidence and accuracy arise from different underlying information. The applied implication is that confidence differences should not be taken as implying accuracy differences when the phenomenal basis of the memory reports differ.
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Papers by Julie Anne Seguin