Speech-language pathologists can earn the Certificate of Clinical Competence in Speech-Language Pathology (CCC-SLP), offered by the American Speech-Language-Hearing Association. Certification satisfies some or all of the requirements for state licensure and may be required by some employers.
The effect of lavender on sleep has also been studied. The inhaling of lavender odour during sleep has been observed to reduce the respiration frequency (you breathe in and out less), which is commonly used as an indicator of relaxation and sleep depth.
However, early research shows that lavender essential oil may be of some benefit when it comes to easing sleep problems. For instance, a 2006 study of 42 women with insomnia found that four weeks of treatment with lavender aromatherapy helped relieve insomnia (in addition to reducing symptoms of depression).