many believe that lullabies, characterized by their slow tempos, contain some acoustic features that are…

many believe that lullabies, characterized by their slow tempos, contain some acoustic features that are universally calming to infants. in a study, constance m. bainbridge and colleagues played both a lullaby sung in the luk saami language and a non - lullaby sung in the tundra nenets language to a group of infants. the researchers also measured the infants heart rates, as a reduced heart rate is considered a measure of relaxation. they claim that the lullaby did indeed relax the infants. which finding, if true, would most directly support bainbridge and colleagues claim? a the heart rates of infants in the study were more irregular during the lullabies than during non - lullabies. b infants heart rates were substantially lower during the lullaby than during the non - lullaby. c parents of infants in the study chose the lullaby over the non - lullaby when asked which song they would use to calm their child. d both the song in luk saami and the song in tundra nenets were sung by a female singer.

many believe that lullabies, characterized by their slow tempos, contain some acoustic features that are universally calming to infants. in a study, constance m. bainbridge and colleagues played both a lullaby sung in the luk saami language and a non - lullaby sung in the tundra nenets language to a group of infants. the researchers also measured the infants heart rates, as a reduced heart rate is considered a measure of relaxation. they claim that the lullaby did indeed relax the infants. which finding, if true, would most directly support bainbridge and colleagues claim? a the heart rates of infants in the study were more irregular during the lullabies than during non - lullabies. b infants heart rates were substantially lower during the lullaby than during the non - lullaby. c parents of infants in the study chose the lullaby over the non - lullaby when asked which song they would use to calm their child. d both the song in luk saami and the song in tundra nenets were sung by a female singer.

Answer

Brief Explanation:

The researchers claim lullabies relax infants as they reduce heart - rate. A finding that infants' heart rates are substantially lower during lullabies than non - lullabies would directly support this claim as it shows a physiological sign of relaxation.

Answer:

A. The heart rates of infants in the study were more irregular during the lullabies than during non - lullabies. (Incorrect as it doesn't support relaxation claim) B. Infants' heart rates were substantially lower during the lullaby than during the non - lullaby. (Correct as it shows lullaby causes relaxation through lower heart rate) C. Parents of infants in the study chose the lullaby over the non - lullaby when asked which song they would use to calm their child. (Incorrect, preference of parents doesn't show physiological relaxation) D. Both the song in Luk Saami and the song in Tundra Nenets were sung by a female singer. (Incorrect, singer's gender has no relation to relaxation)