Christensen S, Dubignon J, Campbell D
Child Dev. 1976 Jun;47(2):539-42.
Sucking records were made from 24 infants, aged 3-4 days, fed small amounts of their usual formula from nipples of different sizes (5/16-, 8/16-, and 11/16-inch diam). Polygraphic and observer measures showed that the large nipple elicited fewer sucks and a slower sucking rate; 5 infants seen on 2 successive days showed a more marked nipple preference on the second day. The results show that intra-oral stimuli control sucking for a nutriment in much the same way as they have already been shown to control nonnutritive sucking.
对24名3至4天大的婴儿进行了吮吸记录，他们从不同尺寸（直径分别为5/16英寸、8/16英寸和11/16英寸）的奶头中摄取少量其常用配方奶。多导记录和观察者测量结果显示，大尺寸奶头引起的吮吸次数较少且吮吸速度较慢；连续两天观察的5名婴儿在第二天表现出更明显的奶头偏好。结果表明，口腔内刺激控制营养摄取的吮吸方式，与已证明其控制非营养性吮吸的方式大致相同。
