Jacob J Keech

Dr. Jacob J Keech


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 September 2020 in Annals of Behavioral Medicine
Verified
Journal Article
Open access
PDF file
Martin HaggerMartin Hagger
Martin Hagger
SSStephanie R Smith
Stephanie R Smith
JKJacob J Keech
Jacob J Keech
SMSusette Moyers
Susette Moyers
KHKyra Hamilton
Kyra Hamilton
Social distancing is a key behavior to minimize COVID-19 infections. Identification of potentially modifiable determinants of social distancing behavior may provide essential evidence to inform social distancing behavioral interventions. The current study applied an integrated social cognition model to identify the determinants of social distancing behavior, and the processes involved, in the context of the COVID-19 pandemic. In a prospective correlational survey study, samples of Australian (N = 365) and U.S. (N = 440) residents completed online self-report measures of social cognition constructs (attitude, subjective norm, moral norm, anticipated regret, and perceived behavioral control [PBC]), intention, action planning, habit, and past behavior with respect to social distancing behavior at an initial occasion. Follow-up measures of habit and social distancing behavior were taken 1 week later. Structural equation models indicated that subjective norm, moral norm, and PBC were consistent predictors of intention in both samples. Intention, action planning, and habit at follow-up were consistent predictors of social distancing behavior in both samples. Action planning did not have consistent effects mediating or moderating the intention–behavior relationship. Inclusion of past behavior in the model attenuated effects among constructs, although the effects of the determinants of intention and behavior remained. Current findings highlight the importance of subjective norm, moral obligation, and PBC as determinants of social distancing intention and intention and habit as behavioral determinants. Future research on long-range predictors of social distancing behavior and reciprocal effects in the integrated model is warranted.

1 September 2017 in Appetite
Verified
Journal Article
Open access
Martin HaggerMartin Hagger
Martin Hagger
NTNadine Trost
Nadine Trost
JKJacob J Keech
Jacob J Keech
DCDerwin K. C. Chan
Derwin K. C. Chan
KHKyra Hamilton
Kyra Hamilton
Excess consumption of added dietary sugars is related to multiple metabolic problems and adverse health conditions. Identifying the modifiable social cognitive and motivational constructs that predict sugar consumption is important to inform behavioral interventions aimed at reducing sugar intake. We tested the efficacy of an integrated dual-process, dual-phase model derived from multiple theories to predict sugar consumption. Using a prospective design, university students (N = 90) completed initial measures of the reflective (autonomous and controlled motivation, intentions, attitudes, subjective norm, perceived behavioral control), impulsive (implicit attitudes), volitional (action and coping planning), and behavioral (past sugar consumption) components of the proposed model. Self-reported sugar consumption was measured two weeks later. A structural equation model revealed that intentions, implicit attitudes, and, indirectly, autonomous motivation to reduce sugar consumption had small, significant effects on sugar consumption. Attitudes, subjective norm, and, indirectly, autonomous motivation to reduce sugar consumption predicted intentions. There were no effects of the planning constructs. Model effects were independent of the effects of past sugar consumption. The model identified the relative contribution of reflective and impulsive components in predicting sugar consumption. Given the prominent role of the impulsive component, interventions that assist individuals in managing cues-to-action and behavioral monitoring are likely to be effective in regulating sugar consumption.

1 February 2021 in Emotion
Verified
Journal Article
Closed access
JKJacob J Keech
Jacob J Keech
Martin HaggerMartin Hagger
Martin Hagger
KHKyra Hamilton
Kyra Hamilton
Changing individuals' stress mindset has emerged as a technique that may be effective in aiding stress management, but there is limited data on the effects of this technique in managing stress in "real-world" contexts beyond a few days. This study aimed to (a) evaluate the efficacy of a novel imagery-based intervention in changing stress mindset and (b) evaluate the effect of the intervention on stress-related outcomes, compared to a control, after 2 weeks. The study adopted a preregistered randomized controlled trial design. University students (N = 150) attended a research laboratory twice over 2 weeks, receiving the intervention or control condition stimuli in Session 1, and completing measures in both sessions. Academic performance data was collected from university records. Mixed model ANOVAs revealed a large-sized difference in stress mindset among intervention group participants immediately following the intervention and at the follow-up relative to controls. There were also robust effects of the intervention on perceived distress, positive and negative affect, proactive behavior, and academic performance at the follow-up in individuals with high baseline perceived distress, although not in the whole sample. Findings indicate that the intervention is a promising approach for changing individuals' stress mindset and that changing stress mindset can have beneficial effects on coping with ecological stressors. Future research should use intensive longitudinal designs to examine momentary activation of stress mindset and responses to ecological stress. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

6 March 2018 in Annals of Behavioral Medicine
Verified
Journal Article
Closed access
PDF file
JKJacob J Keech
Jacob J Keech
MHMartin S Hagger
Martin S Hagger
FOFrances V O’callaghan
Frances V O’callaghan
KHKyra Hamilton
Kyra Hamilton
Emerging evidence indicates that holding particular stress mindsets has favorable implications for peoples’ health and performance under stress. The aim of the current study was to examine the processes by which implicit and explicit stress mindsets relate to health- and performance-related outcomes. Specifically, we propose a stress beliefs model in which somatic responses to stress and coping behaviors mediate the effect of stress mindsets on outcomes. Undergraduate university students (N = 218, n = 144 females) aged 17– 25 years completed measures of stress mindset, physical and psychological wellbeing, perceived stress, perceived somatic responses to stress, proactive behaviors under stress, and an implicit association test assessing an implicit stress mindset. At the end of the semester, students’ academic performance was collected from university records. Path analysis indicated significant indirect effects of stress mindset on psychological wellbeing and perceived stress through proactive coping behaviors and perceived somatic symptoms. Stress mindset directly predicted perceived stress and physical wellbeing, and physical wellbeing and academic performance were predicted by stress mindset through perceived somatic symptoms. Implicit stress mindset did not predict proactive behavior as anticipated. Current findings indicate that behaviors with the goal of proactively meeting demands under stress and perceived somatic symptoms are important mediators of the effect of stress mindset on health- and performance-related outcomes. The findings from this study provide formative data that can inform the development of future interventions aiming to encourage more adaptive responses to stress.

26 June 2020 in Stress and Health
Verified
Journal Article
Open access
PDF file
Martin HaggerMartin Hagger
Martin Hagger
JKJacob J Keech
Jacob J Keech
KHKyra Hamilton
Kyra Hamilton
The novel coronavirus disease 2019 (COVID‐19) pandemic is a truly global public health crisis with substantive human, social, and economic costs. The pandemic and the associated preventive ‘lockdown’ measures have also given rise to a parallel mental health crisis, with elevated levels of chronic stress observed in the general population. Stress levels are also likely to be higher among at‐risk groups such as those who have become employed or are on furlough, those in essential services with higher risk of exposure, and those from underserved communities. Development of efficacious means to assist individuals in effectively managing their during the pandemic and beyond is an imperative. We outline how stress reappraisal interventions offer a potentially efficacious, cost effective strategy to manage pandemic‐related stress and minimize deleterious health consequences. Specifically, we advocate two stress management strategies: stress reappraisal, which involves prompting individuals to appraise stress as challenging and to be approached rather than threatening and to be avoided, and stress mindsets, which involves highlighting the enhancing nature of stress. We outline how these strategies may be implemented during the pandemic as part of interventions aimed at promoting stress management and better mental health during the pandemic and as communities emerge from lockdown.

1 February 2018 in Transportation Research Part F: Traffic Psychology and Behaviour
Verified
Journal Article
Open access
KHKyra Hamilton
Kyra Hamilton
APAmy E. Peden
Amy E. Peden
JKJacob J Keech
Jacob J Keech
MHMartin S. Hagger
Martin S. Hagger
Despite awareness of campaigns such as ‘Turn Around, Don’t Drown’ and the Australian state of Queensland’s ‘If It’s Flooded, Forget It’, people continue to drive through floodwaters, causing loss of life, risk to rescuers, and damage to vehicles. The aim of this study was to develop a video infographic that highlights the dangers of driving through floodwaters and provide safety tips to reduce the risk, and to evaluate its effectiveness in changing the beliefs and intentions of Australian adults toward this risky driving behaviour. This study adopted an online three-wave non-controlled pretest–posttest design. Australian licensed drivers ( N = 201, male = 41, female = 160; M age = 34.10) self-reported their demographic and psychological variables (intention, attitude, subjective norm, barrier self-efficacy, risk perception, anticipated regret, perceived susceptibility, and perceived severity) at baseline (T1), immediately post-intervention (T2), and at a one-month follow-up (T3). Messages in the video infographic were developed based on psychological theory and empirical evidence, using data on causal factors derived from coronial records and the findings of behavioural research. Results indicated that men had significantly higher intentions and attitudes and significantly lower barrier self-efficacy, risk perception, anticipated regret, perceived susceptibility, and perceived severity with respect to driving through floodwater than women. Statistically significant time x gender interaction effects were also found; attitude and subjective norm were significantly lower between T1 and T2 for both men and women but scores between T2 and T3 remained significantly lower for women only. In addition, perceived susceptibility and perceived severity scores were significantly higher in women across T1 and T2, with the difference maintained at T3. In contrast, there were no differences in scores across the three-time points for men. The implications of these findings for road safety and drowning prevention messages targeting drivers during floods are discussed.