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Ko te reo te mauri o te mana Māori: Reclaiming mātauranga, identity and the future of our people
(Te Pua Wānanga ki te Ao | Faculty of Māori and Indigenous Studies, University of Waikato, 2026) Maxwell, Te Kahautu
This lecture offers a glimpse into research into te reo Māori, tikanga Māori, mātauranga Māori and kapa haka. It presents te reo as the root of tikanga, tikanga as the foundation of mātauranga Māori, and kapa haka as the vehicle through which this knowledge is brought to life. More than a language, te reo is the mauri through which all people can understand the Māori worldview and deepen their appreciation of Aotearoa, the ancestral homeland, Māori have shared with all who now call it home. Through kapa haka, whakapapa, histories, values, belief systems, iwitanga and ancestral knowledge are expressed, revitalised and transmitted, connecting the hunga mate with te hunga mate and carrying Māoritanga, identity, knowledge and aspirations forward for future generations. “He uri nō te Raupatu, he toa nō te Rauora!” (Te Arikinui Kuini Ngā Wai hono i te pō, 2026).
Study on the formation mechanisms of core–shell structures and their influence on the properties of Ni-Co-Al-Ti-based high-entropy intermetallic
(The University of Waikato, 2026) Liu, Junqi; Yang, Fei
The advancement of aerospace technology imposes increasingly stringent requirements on the mechanical properties of structural materials at both room and elevated temperatures. Intermetallic compounds have attracted considerable attention due to their excellent specific strength and high-temperature performance. However, their engineering applications are persistently constrained by issues such as room-temperature brittleness or insufficient high-temperature strength. Inspired by the concept of high-entropy design, this study employs a sublattice high-entropy alloying strategy to improve the mechanical properties of conventional intermetallic compounds, developing Ni-Co-Al-Ti-based high-entropy intermetallics with a core–shell structure that exhibit favorable room-temperature ductility. Through further compositional tuning, the core–shell structure evolves toward multi-scale characteristics, achieving synergistic enhancement of strength and ductility. This work reveals the formation mechanism of the multi-scale core–shell structure and its influence on room-temperature mechanical properties, while also elucidating the strengthening–ductilization mechanism of the multi-scale core–shell structured high-entropy intermetallics. In addition, the mechanical properties over a wide temperature range are investigated, revealing the embrittlement at intermediate temperature and an anomalous yield effect, along with the corresponding microscopic mechanisms. First, through thermodynamic and solidification analyses, the effect of Co addition on the Ni(75-x)CoxAl8.33Si8.33Ti8.34 series alloys is studied. The results show that Co addition favors the stable formation of an L12/FCC dual-phase structure. Further microstructural characterization reveals that, at a Co content of 25 at.%, a dual-phase core–shell structure consisting of ordered L12 cores and disordered FCC shells forms within the grains. Based on these observations, the mechanism by which Co addition promotes the formation of the core–shell structure is analyzed. On the one hand, Co addition induces the formation of the FCC phase and promotes the precipitation of the L12 phase, providing the phase-structural basis for the core–shell structure. On the other hand, it maintains a low L12/FCC interfacial energy, supplying an stable interfacial condition for core–shell formation. Mechanical testing indicates that the formation of this structure effectively improves the room-temperature ductility of the alloy. The Ni25Co25Al8.33Si8.33Ti8.34 alloy exhibits a yield strength of approximately 450 MPa, an ultimate tensile strength of about 650 MPa, and a plastic elongation of roughly 10%. Building upon the alloy in which the core–shell structure has already been established, compositional adjustments are performed to promote the development of the core–shell structure toward multi-scale features. The addition of Ta induces the formation of a dual-scale core–shell structure with micron- and submicron- scale in the Ni50Co25Al7Ti7Ta1.5Cr9.5 alloy, effectively enhancing the room-temperature strength. This alloy shows a yield strength of about 800 MPa, an ultimate tensile strength of approximately 1000 MPa, and a plastic strain of about 8%. Further increasing the Al/Ti ratio promotes the formation of a multi-scale core–shell structure comprising micron-scale, submicron-scale, and nanoscale in the Ni50Co25AlxTi(14-x)Ta1.5Cr9.5 alloys, achieving a synergistic improvement in room-temperature strength and ductility. Among them, the Ni50Co25Al9Ti5Ta1.5Cr9.5 alloy exhibits a yield strength of approximately 1000 MPa, an ultimate tensile strength of about 1250 MPa, and a plastic strain of roughly 12.5%. The formation mechanism of the multi-scale core–shell structure can be summarized as follows: Ta addition exacerbates compositional segregation at grain boundaries, inducing the formation of micron-scale core–shell structure. Meanwhile, an increased Al/Ti ratio enhances the sluggish diffusion effect, promoting the precipitation of submicron-scale and nanoscale core–shell structures. Furthermore, Ni50Co25Al9Ti5Ta1.5Cr9.5 alloy with multi-scale core–shell structure is selected as the research object. The evolution of dislocation substructures during room-temperature deformation was systematically characterized, revealing that the room-temperature deformation mechanism of this alloy is synergistically governed by superlattice intrinsic/extrinsic stacking faults, stacking faults, Lomer-Cottrell locks, dislocation forests, and dislocation walls.. On this basis, combined with theoretical calculations, the strengthening–ductilization mechanism is thoroughly elucidated. The results indicate that the high strength of the alloy mainly originates from precipitation strengthening arising from the high-volume-fraction ordered L12 cores and hetero-deformation-induced strengthening caused by the multi-scale core–shell structure, while the favorable ductility is attributed to continuous (FCC+nanoscale L12) dislocation motion channels and hetero-deformation-induced strain hardening. In addition, the highly coherent core–shell interfaces and serrated grain boundaries jointly promote cooperative deformation, enabling the material to achieve an excellent combination of strength and ductility at room temperature. Subsequently, the microstructural stability and mechanical properties of the Ni50Co25Al9Ti5Ta1.5Cr9.5 alloy at 800 ℃ are investigated, revealing a good thermal stability and relatively high yield strength, but with almost zero plastic elongation. Vacuum comparative tensile tests indicate that this intermediate-temperature embrittlement originates from grain-boundary weakening caused by oxygen penetration and stress concentration induced by grain-boundary sliding. By increasing the Cr content to 20 at.%, discontinuous α-Cr phases and small-scale core–shell structures are induced to form at grain boundaries, which effectively hinder oxygen diffusion and restore the 800 ℃ plastic elongation to about 5%, thereby mitigating the embrittlement issue at intermediate temperature. In addition, the mechanical properties of the high-Cr alloy over a wide temperature range from 25 to 1000 ℃ are evaluated. The results show that the yield strength first increases and then decreases with rising temperature, reaching a peak value of about 920 MPa at 800 ℃, exhibiting a clear anomalous yield effect. TEM characterization reveals that this effect is attributable to the transition of the deformation mechanism to anti-phase boundary shearing at elevated temperatures, as well as the formation of Kear-Wilsdorf locks and Lomer-Cottrell locks.
Can you trust what a robot says? The influence of robot morphology on trust
(The University of Waikato, 2026) Jones, Ben; Turner, Jessica; Vanderschantz, Nicholas
As social robots are increasingly used for sharing information, it is essential to determine whether people can trust them. Too little trust and people abandon a useful tool; too much and it may cause over-reliance. Morphology is part of communication, a channel that operates in parallel to spoken words, and it can affect perceptions before the interaction has even begun. Human-like appearances are often thought to make a robot more trustworthy, but our review of the literature shows that trust is not determined by embodiment type alone. Features such as resemblance, gaze, and expressive movement act as social heuristics, signalling what a robot is for and what it can do. Because trust arises only where a person is vulnerable and relying on the robot, information-seeking represents a meaningful context for studying trust even when the stakes are low. Within this context, trust is multidimensional, encompassing performance, relational, and moral judgements. Existing research has examined trust in information from websites, search engines, and disembodied agents, and trust in robots performing industrial or collaborative tasks, but little is known about how morphology affects trust when a robot is itself the information source. In this thesis, we address this gap by examining how a robot's physical form shapes the trust people place in it as an information source. Two studies were conducted using the same four devices: a disembodied smart speaker and zoomorphic, mechanomorphic, and humanoid robots. Each robot performed the same information-seeking task, allowing reported and enacted trust to be separated. First, in a survey, 252 participants watched a video of the robots and rated them using the Human-Robot Interaction Evaluation Scale and the Trust Perception Scale-HRI. Under passive observation, morphology had no significant effect on reported trust and only small effects on social perceptions; prior familiarity predicted perceptions instead, and the humanoid did not receive a trust benefit from anthropomorphic attributions. An observational user study then brought the scenario into the real world, where 54 participants chose to approach a robot in person and ask their own questions. Once people sought information themselves, morphology produced large effects, but the dimensions of trust moved in different, sometimes opposing, directions. The humanoid was rated as the most helpful and fit-for-purpose, yet participants were most likely to double-check what it said. The mechanomorphic robot was most relied upon because its form legibly signalled its communicative purpose. This appearance-function fit, rather than human-likeness, determined whether a robot was trusted appropriately. Cuteness and emotion encouraged people to approach, but cuteness alone did not signal credibility, as the zoomorphic robot was cute yet poorly received as an information source. Morphology's effect on trust is thus conditional on engagement, moving the facets of trust independently rather than uniformly. This thesis contributes an early empirical account of how morphology shapes trust in robots as information sources. Our findings indicate that a form that honestly signals what a robot is for, rather than one that is simply human-like, better supports users in calibrating trust. Systematically varying morphological features is a clear next step for tracing these effects to specific design choices.
The impact of self-compassion writing on chronic disease self-efficacy
(The University of Waikato, 2026) Greenway, Maia; Evelo, Andrew J.
Inflammatory bowel disease (IBD), comprising Crohn’s disease and ulcerative colitis, is a chronic and unpredictable condition associated with substantial psychological burden. Self- efficacy—the belief in one’s ability to manage health-related challenges—is a key predictor of effective chronic disease management, and prior research suggests that self-compassion may provide emotional and cognitive resources that support self-efficacy. The present study examined whether a brief self-compassion writing intervention could increase self-efficacy for managing IBD. Adults with IBD (N = 83) completed a negative IBD-related recall task before being randomly assigned to either the self-compassion writing condition or the control condition. Participants then completed measures of self-compassion and self-efficacy for managing chronic disease. Contrary to our hypotheses, the self-compassion writing task did not significantly increase self-efficacy or self-compassion relative to the control condition, suggesting that the manipulation was insufficient to shift these constructs. However, in line with hypotheses, correlational analyses revealed a moderate positive association between self-compassion and self-efficacy, indicating that individuals who reported greater self-compassion also reported greater confidence in managing their condition. In other words, although a brief, single-session self-compassion writing may not be sufficient to enhance IBD-specific self-efficacy, self- compassion and self-efficacy are meaningfully related in this clinical population. These findings are consistent with theories of chronic disease management and warrant further research into psychological self-management techniques for those with IBD.
He kohikohinga rangahau. A bibliography of Māori and psychology research
(Faculty of Māori and Indigenous Studies, University of Waikato; University of Auckland, 2025) Harris, A.; Huggan, E. P.; Waitoki, Waikaremoana; Tan, Kyle K. H.; Parker, H.
Seven years have passed since the second edition of He Kohikohinga Rangahau: A Bibliography of Māori and Psychology Research was published, with the aim to advance, celebrate, and elevate Māori scholarship and experience within psychology (Hyde et al., 2017). In the years since, Māori psychology has flourished, which gave so much more exciting works to review for inclusion in this edition. To produce this third edition, we collated ‘all’ Māori psychology research published between January 2017 and February 2025, and refined the data from earlier versions based on criteria informed by a decolonial methodology (Tuhiwai-Smith, 2021). We drew on techniques and methods from decolonial curatorial practices (Muñiz-Reed, 2017). This updated bibliography not only builds upon previous iterations (Hollis et al., 2010; Hyde et al., 2017) it also aims to chronicle the ongoing story of Māori and psychology, and reflects our whakapapa, mātau ā-wheako (lived experiences), the expanding connection to Māori psychologists and academics, and changing socio-political contexts. Tied to these connections and responses, is the desire to express Māori self-determination, tino rangatiratanga throughout all areas of psychology.