Final answer:
True, mothers are sometimes included in NICU music therapy sessions, which can benefit infant development as mothers' voices are recognizable to babies from an early age.
Step-by-step explanation:
It is true that sometimes the mother is included in the music therapy session in the NICU (Neonatal Intensive Care Unit). The inclusion of the mother's voice as part of music therapy can be beneficial for the infant's emotional and cognitive development. Studies like those by Mills & Melhuish have shown that infants can recognize their mother's voice early on, illustrating the potential positive impacts of maternal presence in therapy. Furthermore, positive parent-teen relationships and interactions discussed by Moore et al. reinforce the importance of family involvement in the developmental processes of children, adaptable to infants in NICU settings.