claim: The Danish language is spoken in the Netherlands.
evidence: Aletha Jauch Solter , PhD -LRB- born 1945 -RRB- is a Swiss / American developmental psychologist who studied with Jean Piaget in Switzerland before earning a PhD in psychology at the University of California , Santa Barbara .. Swiss. Switzerland. American. United States. developmental psychologist. developmental psychology. Jean Piaget. Jean Piaget. Her specialist areas are attachment , psychological trauma , and non-punitive discipline .. attachment. attachment ( psychology ). psychological trauma. psychological trauma. non-punitive discipline. child discipline. What differentiates her work is that it combines attachment parenting principles with an understanding of the impact of stress and trauma , and thus her work is apparently able to help families who are struggling with sleep , discipline , and emotional health issues that other approaches have been unable to resolve .. attachment. attachment ( psychology ). attachment parenting. attachment parenting. stress. stress ( medicine ). Her first book The Aware Baby has sold over 150,000 copies worldwide .. Subsequent publications are Helping Young Children Flourish , Tears and Tantrums , Raising Drug-Free Kids , and Attachment Play .. In 1990 she founded The Aware Parenting Institute , an international organization with certified instructors in many countries .