Assessment Delta Psychology provides a number of assessment services to individuals, agencies and organisations including learning disabilities, ADD/ADHD, victim impact, Family, Youth and Criminal Court reports, adoption and more. Therapy Delta therapists use cognitive behavioural therapies and related techniques to treat a wide range of problems: trauma, depression, anxiety, phobias, relationships, sexual and physical abuse, obsessive/compulsive disorders, addictions, head injury and pain management are just some of these.. Consultancy Delta provides professional supervision, employee assistance programmes, ethics advice, mediation, change management and organisational restructuring strategies to individuals, agencies, businesses and NGOs. Brian Dixon (MSc DipClinPsych FNZPsS)