Ysgol Seicoleg a Gwyddor Chwaraeon

  1. Cyhoeddwyd

    Concerted Influences on Language Transmission: Summary and Discussion.

    Gathercole, V. M., Gathercole, V. C., Thomas, E. M. (gol.), Williams, E. (gol.) & Deuchar, M. (gol.), 1 Ion 2006, Language Transmission in Bilingual Families in Wales. 2006 gol. Welsh Language Board

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  2. Cyhoeddwyd

    Conceptualization of physical exercise and keeping fit by child wheelchair users and their parents

    Noyes, J., Spencer, L. H., Bray, N., Kubis, H-P., Hastings, R. P., Jackson, M. & O'Brien, T. D., Mai 2017, Yn: Journal of Advanced Nursing. 73, 5, t. 1111-1123 13 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. Cyhoeddwyd

    Conceptual relation preference: A matter of strategy or one of salience?

    Olivera, S., Thierry, G. & Kovic, V., Maw 2020, Yn: Acta Psychologica. 204, 103018.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Computer technology in clinical psychology services for people with mental retardation: A review.

    Hastings, R., Davies, S. & Hastings, R. P., 1 Medi 2003, Yn: Education and Training in Developmental Disabilities. 38, 3, t. 341-352

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  5. Cyhoeddwyd

    Computer simulation of polar rod like molecules.

    Johnston, S. J., Low, R. J. & Neal, M. P., 1 Ion 2002, Yn: Ferroelectrics. 278, 1, t. 91-100

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  6. Cyhoeddwyd

    Computer simulation of polar bent-core molecules.

    Johnston, S. J., Low, R. J. & Neal, M. P., 1 Ion 2002, Yn: Physical Review E. 66, 6, t. 61702

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Computer simulation of apolar bent-core and rodlike molecules.

    Johnston, S. J., Low, R. J. & Neal, M. P., 1 Ion 2002, Yn: Physical Review E. 65, 5, t. 51706

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Computational principles of the recognition of biological movements.

    Giese, M. A., Knoblich, W., Thornton, I. M., Grosjean, M. & Shiffrar, M., 1 Ion 2005, The Human Body: Perception From the Inside Out. 2005 gol. Oxford University Press, t. 323-359

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  9. Cyhoeddwyd

    Computational mechanisms of object constancy for visual recognition revealed by event-related potentials

    Leek, C., Atherton, C. & Thierry, G., 1 Maw 2007, Yn: Vision Research. 47, 5, t. 706-713 7 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  10. Cyhoeddwyd

    Comprehension of action sequences: The case of Paper, Scissors, Rock.

    Bach, P., Knoblich, G., Friederici, A. D. & Prinz, W., 1 Ion 2001, t. 39-44.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  11. Cyhoeddwyd

    Comprehension and production of body part labels in 2 to 3-year-old children.

    Camoes-Costa, V., Erjavec, M. & Horne, P. J., 1 Medi 2011, Yn: British Journal of Development Psychology. 29, 3, t. 552-571

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. Cyhoeddwyd

    Compound words prompt arbitrary semantic associations in conceptual memory

    Boutonnet, B. P., McClain, R. & Thierry, G., 14 Maw 2014, Yn: Frontiers in Psychology. 5, t. 222

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd

    Components of the task-shift cost

    Sapir, A. E., Meiran, N., Chorev, Z. & Sapir, A., 1 Ion 2000, Yn: Cognitive Psychology. 41, t. 211-253

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  14. Cyhoeddwyd

    Complex graphemes as functional spelling units: Evidence from acquired dysgraphia

    Tainturier, M. J. & Rapp, B. C., 2004, Yn: Neurocase. 10, 2, t. 122-131

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  15. Cyhoeddwyd

    Competitive state of movements during planning predicts sequence performance

    Mantziara, M., Ivanov, T., Houghton, G. & Kornysheva, K., Ebr 2021, Yn: Journal of Neurophysiology. 125, 4, t. 1251-1268

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  16. Cyhoeddwyd

    Competitive state of actions during planning predicts sequence execution accuracy

    Mantziara, M., Ivanov, T., Houghton, G. & Kornysheva, K., 10 Mai 2020, (bioRxiv).

    Allbwn ymchwil: Papur gweithioRhagargraffiad

  17. Cyhoeddwyd

    Competition-specific preparation and expert performance

    Eccles, D., Ward, P. & Woodman, T., 1 Ion 2009, Yn: Psychology of Sport and Exercise. 10, 1, t. 96-107

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  18. Cyhoeddwyd

    Competition in visual working memory for control of search.

    Downing, P. E. & Dodds, C. M., 1 Awst 2004, Yn: Visual Cognition. 11, 6, t. 689-703

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    Competition in Visual Working Memory for Control of Search.

    Downing, P. E. & Dodds, C. M., 1 Ion 2003.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  20. Cyhoeddwyd

    Competition between endogenous and exogenous orienting of visual attention.

    Berger, A., Henik, A. & Rafal, R. D., 1 Mai 2005, Yn: Journal of Experimental Psychology General. 134, 2, t. 207-221

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  21. Cyhoeddwyd

    Competence to teach mindfulness

    Crane, R. S., 1 Chwef 2013, Yn: Psycologist. 26, 2, t. 83

    Allbwn ymchwil: Cyfraniad at gyfnodolynLlythyradolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Competence in teaching mindfulness-based courses

    Crane, R., 2013.

    Allbwn ymchwil: Cyfraniad at gynhadleddCrynodebadolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Competence in Teaching Mindfulness-Based Courses: Concepts, Development and Assessment

    Crane, R. S., Kuyken, W., Williams, J. M. G., Hastings, R., Cooper, L. & Fennell, M., 1 Maw 2012, Yn: Mindfulness. 3, 1, t. 76-84

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  24. Cyhoeddwyd

    Competence in Teaching Mindfulness-Based Courses: Concepts, Development and Assessment

    Crane, R., 5 Hyd 2014

    Allbwn ymchwil: Cyfraniad arallCyfraniad Aralladolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Comparisons of interventions for rumination maintained by automatic reinforcement

    Sharp, R., Phillips, K. & Mudford, O., Gorff 2012, Yn: Research in Autism Spectrum Disorders. t. 1107-1112 6 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  26. Cyhoeddwyd

    Comparison of two treatments of children with severely disruptive behaviours: a four year follow up.

    Hutchings, J. M., Hutchings, J., Lane, E. & Kelly, J., 1 Ion 2004, Yn: Behavioural and Cognitive Psychotherapy. 32, 1, t. 15-30

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  27. Cyhoeddwyd

    Comparison of the effects of exercise and anti-TNF treatment on cardiovascular health in rheumatoid arthritis: results from two controlled trials

    Veldhuijzen van Zanten, J. J. C. S., Sandoo, A., Metsios, G. S., Stavropoulos-Kalinoglou, A., Ntoumanis, N. & Kitas, G. D., Chwef 2019, Yn: Rheumatology international. 39, 2, t. 219-225

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  28. Cyhoeddwyd

    Comparison between moderate-high exercise and continuous exercise in a real-life cardiac rehabilitation setting - nine months follow-up

    Kubis, H., Pernick, Y., Zyssman, I., Kubis, H. P., Moore, J. P. & Vered, Z., 1 Awst 2015, Yn: European Heart Journal. 36, 1, t. 633

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Comparison Of Anti-Craving Efficacy Of Right And Left Repetitive Transcranial Magnetic Stimulation In Alcohol Dependence: A Randomized Double-Blind Study

    Mishra, B. R., Praharaj, S. K., Sarkar, S., Katshu, M. Z. & Nizamie, S. H., 1 Rhag 2015, Yn: Journal of Neuropsychiatry and Clinical Neurosciences. 27, 1, t. 54-59

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  30. Cyhoeddwyd

    Comparing Live and VideoObservation to Assess Early Parent-child Interactions in the Home

    Gridley, N., Bywater, T-J. & Hutchings, J., Meh 2018, Yn: Journal of Child and Family Studies. 27, 6, t. 1818-1829 12 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  31. Cyhoeddwyd

    Comparative reliability of proton spectroscopy techniques designed to improve detection of J-coupled metabolites.

    Mullins, P. G., Chen, H., Xu, J., Caprihan, A. & Gasparovic, C., 1 Hyd 2008, Yn: Magnetic Resonance in Medicine. 60, 4, t. 964-969

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  32. Cyhoeddwyd

    Comparability of written questionnaire data and interview data.

    Gathercole, V. M., Gathercole, V. C., Thomas, E. M. (gol.), Williams, E. (gol.) & Deuchar, M. (gol.), 1 Ion 2006, Language Transmission in Bilingual Families in Wales. 2006 gol. Welsh Language Board

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  33. Cyhoeddwyd

    Community rehabilitation for individuals with an acquired brain injury in North Wales: a comparitive study

    Coetzer, B. R., Coetzer, R. & Du Toit, P. L., 1 Ion 2000, Yn: Psychologist in Wales. 10, t. 3-7

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Community Based Support for Parents

    Hutchings, J. M., Hutchings, J., Webster-Stratton, C., Houghugi, M. (gol.) & Long, N. (gol.), 1 Ion 2004, Handbook of Parenting: Theory and Research for Practice. 2004 gol. SAGE Publications, t. 334-351

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  35. Cyhoeddwyd

    Communication Therapy with Synchronised Music for Children with Autism

    Wimpory, D., 1993, Yn: Psychologist. 6, 1

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygl

  36. Cyhoeddwyd

    Communication Therapy with Synchronised Music for Children with Autism

    Wimpory, D., 1992.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapuradolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Communicating the diagnosis of serious incurable illness: Motor Neurone Disease

    Morrison, V., 1996, Yn: Palliative Medicine. 10, t. 23-34

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  38. Cyhoeddwyd

    Communicating hands: ERPs elicited by meaningful symbolic hand postures.

    Gunter, T. C. & Bach, P., 30 Tach 2004, Yn: Neuroscience Letters. 372, 1-2, t. 52-56

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Common, important, and unmet needs of cancer outpatients

    Morrison, V., Henderson, B. J., Zinovieff, F., Davies, G., Cartmell, R., Hall, A. & Gollins, S., 1 Ebr 2012, Yn: European Journal of Oncology Nursing. 16, 2, t. 115-123

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Common variants in Alzheimer’s disease and risk stratification by polygenic risk scores

    de Rojas, I., Moreno-Grau, S., Tesi, N., Grenier-Boley, B., Andrade, V., Jansen, I. E., Pedersen, N. L., Stringa, N., Zettergren, A., Hernández, I., Montrreal, L., Antúnez, C., Antonell, A., Tankard, R. M., Bis, J. C., Sims, R., Bellenguez, C., Quintela, I., González-Perez, A., Calero, M., Franco-Macías, E., Macías, J., Blesa, R., Cervera-Carles, L., Menéndez-González, M., Frank-García, A., Royo, J. L., Moreno, F., Huerto Vilas, R., Baquero, M., Diez-Fairen, M., Lage, C., García-Madrona, S., García-González, P., Alarcón-Martín, E., Valero, S., Sotolongo-Grau, O., Ullgren, A., Naj, A. C., Lemstra, A. W., Benaque, A., Pérez-Cordón, A., Benussi, A., Rábano, A., Padovani, A., Squassina, A., de Mendonça, A., Arias Pastor, A., Kok, A. A. L., Meggy, A., Pastor, A. B., Espinosa, A., Corma-Gómez, A., Martín Montes, A., Sanabria, Á., DeStefano, A. L., Schneider, A., Haapasalo, A., Kinhult Ståhlbom, A., Tybjærg-Hansen, A., Hartmann, A. M., Spottke, A., Corbatón-Anchuelo, A., Rongve, A., Borroni, B., Arosio, B., Nacmias, B., Nordestgaard, B. G., Kunkle, B. W., Charbonnier, C., Abdelnour, C., Masullo, C., Martínez Rodríguez, C., Muñoz-Fernandez, C., Dufouil, C., Graff, C., Ferreira, C. B., Chillotti, C., Reynolds, C. A., Fenoglio, C., Van Broeckhoven, C., Clark, C., Pisanu, C., Satizabal, C. L., Holmes, C., Buiza-Rueda, D., Aarsland, D., Rujescu, D., Alcolea, D., Galimberti, D., Wallon, D., Seripa, D., Grünblatt, E., Dardiotis, E., Düzel, E., Scarpini, E., Conti, E., Rubino, E., Gelpi, E., Rodriguez-Rodriguez, E., Duron, E., Boerwinkle, E., Ferri, E., Tagliavini, F., Küçükali, F., Pasquier, F., Sanchez-Garcia, F., Mangialasche, F., Jessen, F., Nicolas, G., Selbæk, G., Ortega, G., Chêne, G., Hadjigeorgiou, G., Rossi, G., Spalletta, G., Giaccone, G., Grande, G., Binetti, G., Papenberg, G., Hampel, H., Bailly, H., Zetterberg, H., Soininen, H., Karlsson, I. K., Alvarez, I., Appollonio, I., Giegling, I., Skoog, I., Saltvedt, I., Rainero, I., Rosas Allende, I., Hort, J., Diehl-Schmid, J., Van Dongen, J., Vidal, J-S., Lehtisalo, J., Wiltfang, J., Thomassen, J. Q., Kornhuber, J., Haines, J. L., Vogelgsang, J., Pineda, J. A., Fortea, J., Popp, J., Deckert, J., Buerger, K., Morgan, K., Fließbach, K., Sleegers, K., Molina-Porcel, L., Kilander, L., Weinhold, L., Farrer, L. A., Wang, L-S., Kleineidam, L., Farotti, L., Parnetti, L., Tremolizzo, L., Hausner, L., Benussi, L., Froelich, L., Ikram, M. A., Deniz-Naranjo, M. C., Tsolaki, M., Rosende-Roca, M., Löwenmark, M., Hulsman, M., Spallazzi, M., Pericak-Vance, M. A., Esiri, M., Bernal Sánchez-Arjona, M., Dalmasso, M. C., Martínez-Larrad, M. T., Arcaro, M., Nöthen, M. M., Fernández-Fuertes, M., Dichgans, M., Ingelsson, M., Herrmann, M. J., Scherer, M., Vyhnalek, M., Kosmidis, M. H., Yannakoulia, M., Schmid, M., Ewers, M., Heneka, M. T., Wagner, M., Scamosci, M., Kivipelto, M., Hiltunen, M., Zulaica, M., Alegret, M., Fornage, M., Roberto, N., van Schoor, N. M., Seidu, N. M., Banaj, N., Armstrong, N. J., Scarmeas, N., Scherbaum, N., Goldhardt, O., Hanon, O., Peters, O., Skrobot, O. A., Quenez, O., Lerch, O., Bossù, P., Caffarra, P., Dionigi Rossi, P., Sakka, P., Hoffmann, P., Holmans, P. A., Fischer, P., Riederer, P., Yang, Q., Marshall, R., Kalaria, R. N., Mayeux, R., Vandenberghe, R., Cecchetti, R., Ghidoni, R., Frikke-Schmidt, R., Sorbi, S., Hägg, S., Engelborghs, S., Helisalmi, S., Botne Sando, S., Kern, S., Archetti, S., Boschi, S., Fostinelli, S., Gil, S., Mendoza, S., Mead, S., Ciccone, S., Djurovic, S., Heilmann-Heimbach, S., Riedel-Heller, S., Kuulasmaa, T., del Ser, T., Lebouvier, T., Polak, T., Ngandu, T., Grimmer, T., Bessi, V., Escott-Price, V., Giedraitis, V., Deramecourt, V., Maier, W., Jian, X., Pijnenburg, Y. A. L., Smith, A. D., Saenz, A., Bizzarro, A., Lauria, A., Vacca, A., Solomon, A., Anastasiou, A., Richardson, A., Boland, A., Koivisto, A., Daniele, A., Greco, A., Marianthi, A., McGuinness, B., Fin, B., Ferrari, C., Custodero, C., Ferrarese, C., Ingino, C., Mangone, C., Reyes Toso, C., Martínez, C., Cuesta, C., Muchnik, C., Joachim, C., Ortiz, C., Besse, C., Johansson, C., Zoia, C. P., Laske, C., Anastasiou, C., Palacio, D. L., Politis, D. G., Janowitz, D., Craig, D., Mann, D. M., Neary, D., Jürgen, D., Daian, D., Belezhanska, D., Kohler, E., Castaño, E. M., Koutsouraki, E., Chipi, E., De Roeck, E., Costantini, E., Vardy, E. R. L. C., contributors, EADB., MacLeod, C., Woods, B. & Windle, G., 7 Meh 2021, Yn: Nature Communications. 12, 1, 3417.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Common patterns of prediction of literacy development in different alphabetic orthographies

    Caravolas, M., Lervåg, A., Mousikou, P., Efrim, C., Litavsky, M., Onochie-Quintanilla, E., Salas, N., Schöffelová, M., Defior, S., Mikulajová, M., Seidlová-Málková G., N. V. & Hulme, C., 1 Meh 2012, Yn: Psychological Science. 23, 6, t. 678-686

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Common neural substrates for visual working memory and attention.

    Linden, D., Mayer, J. S., Bittner, R. A., Nikolic, D., Bledowski, C., Goebel, R. & Linden, D. E., 1 Meh 2007, Yn: Neuroimage. 36, 2, t. 441-453

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  43. Cyhoeddwyd

    Commissioned Article: Update on Conduct Disorder and Parenting Interventions

    Hutchings, J. M., 1 Ion 2006, Yn: British Psychological Society, Faculty of Children and Young people: Service and Pracice Update. 5, 2, t. 14-19

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Commentary on “Reflections on culture, structure and function of an intensive support service centred on positive behavioural support”

    Toogood, S., 3 Hyd 2016, Yn: Tizard Learning Disability Review. 21, 4, t. 212-219 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynSylw/Dadladolygiad gan gymheiriaid

  45. Cyhoeddwyd

    Commentary on Ruz and Lupianezs' A review of attention capture: On its automaticity and sensitivity to endogenous control.

    Rafal, R. D., 1 Ion 2002, Yn: Psicologica. 23, t. 357-361

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Commentaries on Viewpoint: Fatigue mechanisms determining exercise performance: Integrative physiology is systems physiology.

    Marcora, S. M., 1 Mai 2008, Yn: Journal of Applied Physiology. 104, 5, t. 1543

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  47. Cyhoeddwyd

    Commentaries on Viewpoint: Evidence that reduced skeletal muscle recruitment explains the lactate paradox during exercise at high altitude.

    Marcora, S. M., 1 Chwef 2009, Yn: Journal of Applied Physiology. 106, 2, t. 739

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Command of the mass/count distinction in bilingual and monolingual children: An English morphosyntactic distinction.

    Gathercole, V. M., Gathercole, V. C., Oller, D. K. (gol.) & Eilers, R. E. (gol.), 1 Ion 2002, Language and literacy in bilingual children. 2002 gol. Multilingual Matters Ltd, t. 175-206

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  49. Cyhoeddwyd

    Combining view-based and model-based tracking of articulated human movements.

    Curio, C., Giese, M. A. & Elmadfa, I. (gol.), 1 Ion 2005, IEEE Computer Society Workshop on Motion and Vision Computing. 2005 gol. IEEE Computer Society Press, t. 261-268

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  50. Cyhoeddwyd

    Combining transcranial magnetic stimulation and functional imaging in cognitive brain research: possibilities and limitations.

    Linden, D., Sack, A. T. & Linden, D. E., 1 Medi 2003, Yn: Brain Research Reviews. 43, 1, t. 41-56

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid