• Thumb-sucking and object attachment commonly occur during childhood. Object attachment is usually harmless, but thumb-sucking can lead to complications when chronically practiced by older children. Effective thumb-sucking treatment is available, but to my knowledge, it has not been evaluated on thumb-sucking children who are also attached to objects. This study, using a multiple baseline design, shows treatment eliminated thumb-sucking in eight thumb-sucking children with concurrent attachment and that seven of the children subsequently lost interest in their attachment object.
Friman PC. Concurrent Habits: What Would Linus Do With His Blanket If His Thumb-sucking Were Treated? Am J Dis Child. 1990;144(12):1316–1318. doi:10.1001/archpedi.1990.02150360040016
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