Ian Grant Mackenzie
Biographic Data
| ID | 6541003 |
|---|---|
| NAME | Ian Grant Mackenzie |
| GIVEN NAMES | Ian Grant |
| FAMILY NAME | Mackenzie |
| SIGNATURE | MACKENZIE I G |
| AFFILIATIONS | University of Tübingen |
| ORCID | 0000-0001-8950-9601 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 2 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2021 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Ten years Diffusion Model for Conflict (DMC) tasks: Theoretical foundations, applications, practical recommendations, and open challenges
A central question in cognitive psychology concerns how humans selectively attend to task-relevant information while ignoring task-irrelevant information. This question is frequently studied using conflict tasks, such as the Simon, Eriksen flanker, and Stroop tasks that require responses to relevant stimulus features while ignoring irrelevant and potentially conflicting features. All conflict tasks produce better performance in congruent trials w…
How visual eccentricity shapes conflict via target and distractor processing in the Simon task
The visual Simon task is widely used to study action control in the presence of conflicting target and distractor information. However, it is unclear how one of the core parameters of this task, visual target eccentricity, affects conflict processing. Building on a quantitative dual-route model Diffusion Model for Conflict Tasks (DMC), we hypothesized that increased eccentricity alters the relative strength of target- and distractor-based activat…
Evaluative processing of emotional and moral content during discourse comprehension: Insights from event-related brain potentials
The present experiment examined whether an affective evaluation process contributes to discourse comprehension when participants silently read for comprehension, by analyzing event-related potentials (ERPs). Kunkel, Filik, Mackenzie, and Leuthold (2018) showed that when participants read about emotional events or moral transgressions while performing explicit emotional judgments, a larger late positive potential (LPP) was triggered for negative v…
A comment on the Revised Diffusion Model for Conflict tasks (RDMC)
In conflict tasks, such as the Simon, Eriksen flanker, or Stroop task, a relevant and an irrelevant feature indicate the same or different responses in congruent and incongruent trials, respectively. The congruency effect refers to faster and less error-prone responses in congruent relative to incongruent trials. Distributional analyses reveal that the congruency effect in the Simon task becomes smaller with increasing RTs, reflected by a negativ…
Introspection about forced and free choice: Accurate subjective time estimation for externally as well as self-determined actions
Free-choice behavior is unique in that actions are internally self-determined, unlike forced-choice behavior, which is externally specified. Several studies suggest these two action modes can lead to different behavioral, affective, and motivational outcomes. We examined whether people estimate free-choice differently from forced-choice processing time due to possible introspective biases associated with these modes. Consistent with previous stud…
The temporal dynamics of task processing and choice in a novel multitasking paradigm
This study investigated the temporal dynamics of task performance and voluntary task choice within a multitasking paradigm in which the task-related processing outcomes themselves determined the to-be-performed task. In the novel forced-no-go trials, the stimulus for one task required an overt response, but the stimulus for the other task was associated with a no-go response. Task performance results showed that participants often processed the n…
Extreme Outcomes Accentuate Overweighting of Low Probabilities and Underweighting of High Probabilities in Experience‐Based Choice
Subjective inferences of probability are critical for decisions involving uncertainty. Recent studies have suggested that extreme outcomes bias beliefs about the value of uncertain options toward the best/worst outcome possible when learning the odds through experience, leading to increased preferences for uncertain options over equivaluable sure bets when there is the prospect of gain and, conversely, aversion to uncertain options when there is …
Motor demands influence conflict processing in a mouse-tracking Simon task
Previous studies have shown incorrect motor activation when making perceptual decisions under conflict, but the potential involvement of motor processes in conflict resolution is still unclear. The present study tested whether the effects of distracting information may be reduced when anticipated motor processing demands increase. Specifically, across two mouse-tracking Simon experiments, we manipulated blockwise motor demands (high vs. low) by r…
Replacing vertical actions by mouse movements: A web-suited paradigm for investigating vertical spatial associations
The number of web-based studies in experimental psychology has been growing tremendously throughout the last few years. However, a straightforward web-based implementation does not exist for all types of experimental paradigms. In the current paper, we focus on how vertical response movements—which play a crucial role in spatial cognition and language research—can be translated into a web-based setup. Specifically, we introduce a web-suited count…
The role of task-relevant and task-irrelevant information in congruency sequence effects: Applying the diffusion model for conflict tasks
Following negative search instructions: The role of visual context
One typical use of negation is to refer to exceptions. In a visual display showing several similar items (majority) and one exception, referring to the exception by negating the majority should therefore be pragmatically felicitous. We investigated whether comprehenders are sensitive to these pragmatic aspects when processing negative sentences and having to identify the according items in the visual display. In Experiment 1, participants read af…
The time-course of distractor-based activation modulates effects of speed-accuracy tradeoffs in conflict tasks
The cognitive processes underlying the ability of human performers to trade speed for accuracy is often conceptualized within evidence accumulation models, but it is not yet clear whether and how these models can account for decision-making in the presence of various sources of conflicting information. In the present study, we provide evidence that speed-accuracy tradeoffs (SATs) can have opposing effects on performance across two different confl…
The Role of Predictability During Negation Processing in Truth-Value Judgment Tasks
In experiments investigating the processing of true and false negative sentences, it is often reported that polarity interacts with truth-value, in the sense that true sentences lead to faster reaction times than false sentences in affirmative conditions whereas the same does not hold for negative sentences. Various reasons for this difference between affirmative and negative sentences have been discussed in the literature (e.g., lexical associat…
The Role of Predictability During Negation Processing in Truth-Value Judgment Tasks
In experiments investigating the processing of true and false negative sentences, it is often reported that polarity interacts with truth-value, in the sense that true sentences lead to faster reaction times than false sentences in affirmative conditions whereas the same does not hold for negative sentences. Various reasons for this difference between affirmative and negative sentences have been discussed in the literature (e.g., lexical associat…
The Role of Predictability During Negation Processing in Truth-Value Judgment Tasks
In experiments investigating the processing of true and false negative sentences, it is often reported that polarity interacts with truth-value, in the sense that true sentences lead to faster reaction times than false sentences in affirmative conditions whereas the same does not hold for negative sentences. Various reasons for this difference between affirmative and negative sentences have been discussed in the literature (e.g., lexical associat…
Following negative search instructions: The role of visual context
One typical use of negation is to refer to exceptions. In a visual display showing several similar items (majority) and one exception, referring to the exception by negating the majority should therefore be pragmatically felicitous. We investigated whether comprehenders are sensitive to these pragmatic aspects when processing negative sentences and having to identify the according items in the visual display. In Experiment 1, participants read af…
The time-course of distractor-based activation modulates effects of speed-accuracy tradeoffs in conflict tasks
The cognitive processes underlying the ability of human performers to trade speed for accuracy is often conceptualized within evidence accumulation models, but it is not yet clear whether and how these models can account for decision-making in the presence of various sources of conflicting information. In the present study, we provide evidence that speed-accuracy tradeoffs (SATs) can have opposing effects on performance across two different confl…
Motor demands influence conflict processing in a mouse-tracking Simon task
Previous studies have shown incorrect motor activation when making perceptual decisions under conflict, but the potential involvement of motor processes in conflict resolution is still unclear. The present study tested whether the effects of distracting information may be reduced when anticipated motor processing demands increase. Specifically, across two mouse-tracking Simon experiments, we manipulated blockwise motor demands (high vs. low) by r…
Replacing vertical actions by mouse movements: A web-suited paradigm for investigating vertical spatial associations
The number of web-based studies in experimental psychology has been growing tremendously throughout the last few years. However, a straightforward web-based implementation does not exist for all types of experimental paradigms. In the current paper, we focus on how vertical response movements—which play a crucial role in spatial cognition and language research—can be translated into a web-based setup. Specifically, we introduce a web-suited count…
The role of task-relevant and task-irrelevant information in congruency sequence effects: Applying the diffusion model for conflict tasks
The temporal dynamics of task processing and choice in a novel multitasking paradigm
This study investigated the temporal dynamics of task performance and voluntary task choice within a multitasking paradigm in which the task-related processing outcomes themselves determined the to-be-performed task. In the novel forced-no-go trials, the stimulus for one task required an overt response, but the stimulus for the other task was associated with a no-go response. Task performance results showed that participants often processed the n…
Extreme Outcomes Accentuate Overweighting of Low Probabilities and Underweighting of High Probabilities in Experience‐Based Choice
Subjective inferences of probability are critical for decisions involving uncertainty. Recent studies have suggested that extreme outcomes bias beliefs about the value of uncertain options toward the best/worst outcome possible when learning the odds through experience, leading to increased preferences for uncertain options over equivaluable sure bets when there is the prospect of gain and, conversely, aversion to uncertain options when there is …
A comment on the Revised Diffusion Model for Conflict tasks (RDMC)
In conflict tasks, such as the Simon, Eriksen flanker, or Stroop task, a relevant and an irrelevant feature indicate the same or different responses in congruent and incongruent trials, respectively. The congruency effect refers to faster and less error-prone responses in congruent relative to incongruent trials. Distributional analyses reveal that the congruency effect in the Simon task becomes smaller with increasing RTs, reflected by a negativ…
Introspection about forced and free choice: Accurate subjective time estimation for externally as well as self-determined actions
Free-choice behavior is unique in that actions are internally self-determined, unlike forced-choice behavior, which is externally specified. Several studies suggest these two action modes can lead to different behavioral, affective, and motivational outcomes. We examined whether people estimate free-choice differently from forced-choice processing time due to possible introspective biases associated with these modes. Consistent with previous stud…
Ten years Diffusion Model for Conflict (DMC) tasks: Theoretical foundations, applications, practical recommendations, and open challenges
A central question in cognitive psychology concerns how humans selectively attend to task-relevant information while ignoring task-irrelevant information. This question is frequently studied using conflict tasks, such as the Simon, Eriksen flanker, and Stroop tasks that require responses to relevant stimulus features while ignoring irrelevant and potentially conflicting features. All conflict tasks produce better performance in congruent trials w…
How visual eccentricity shapes conflict via target and distractor processing in the Simon task
The visual Simon task is widely used to study action control in the presence of conflicting target and distractor information. However, it is unclear how one of the core parameters of this task, visual target eccentricity, affects conflict processing. Building on a quantitative dual-route model Diffusion Model for Conflict Tasks (DMC), we hypothesized that increased eccentricity alters the relative strength of target- and distractor-based activat…
Evaluative processing of emotional and moral content during discourse comprehension: Insights from event-related brain potentials
The present experiment examined whether an affective evaluation process contributes to discourse comprehension when participants silently read for comprehension, by analyzing event-related potentials (ERPs). Kunkel, Filik, Mackenzie, and Leuthold (2018) showed that when participants read about emotional events or moral transgressions while performing explicit emotional judgments, a larger late positive potential (LPP) was triggered for negative v…
Psychology (10 works) · Cognitive psychology (8 works) · Neural and Behavioral Psychology Studies (8 works) · Computer Science (7 works) · Cognition (6 works) · Action Observation and Synchronization (5 works) · Decision-Making and Behavioral Economics (5 works) · Neuroscience (5 works) · Social Psychology (4 works) · Artificial Intelligence (3 works)