Erika wants to experiment with sugar cubes. which of the following causes a sugar cube to only change physically, not chemically? burning the sugar cube with a match chewing the sugar cube and digesting it breaking the sugar down into different substances using sulfuric acid crushing the sugar cube and dissolving it in water

“an abused child's thoughts occasionally drift to other, less anxiety-arousing topics; this anxiety reduction thus serves to strengthen 'other' thoughts, while weakening the thoughts about abuse.” a psychologist with which theoretical background would be most likely to offer this quotation as an explanation for the development of dissociative disorders?