Mae diffyg canolbwyntio'n broblem gynyddol, yn ôl y seicolegydd Awel Vaughan, ond pam? Why is it so difficult to concentrate? Psychologist Awel Vaughan explains. Show more
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Mae diffyg canolbwyntio'n broblem gynyddol, yn ôl y seicolegydd Awel Vaughan, ond pam? Why is it so difficult to concentrate? Psychologist Awel Vaughan explains. Show more