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.
Purple is not so widely used as a relaxing color but it has some relaxant properties. Purple promotes spirituality and promotes life balance, imagination and wisdom. Based on those values we can say that purple has its rightful place among relaxing colors. White stands for freshness and new beginning.