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Phenomenon in linguistics

Fis phenomenon is a phenomenon during a child's language acquisition that demonstrates that perception of phonemes occurs earlier than a child's ability to produce the appropriate allophone. It is also illustrative of a larger theme in child language acquisition: that skills in linguistic comprehension generally precede corresponding skills in linguistic production. The name comes from an incident reported in 1960 by J. Berko and R. Brown, in which a child referred to his inflatable plastic fish as a fis. However, when adults asked him, "Is this your fis?" he rejected the statement. When he was asked, "Is this your fish?" he responded, "Yes, my fis." This shows that although the child could not produce the phoneme /ʃ/, he could perceive it as being different from the phoneme /s/. In some cases, the sounds produced by the child are actually acoustically different, but not significantly enough for others to distinguish since the language in question does not make such contrasts.

Researchers saw the Fis Phenomenon occur while doing research on Juli, a toddler who speaks ASL. The observers had seen it occur with her use of the word for 'water' when Juli was outside holding rocks in her hand and speaking to the observer through a window. Juli produced the sign [ix rock water ix loc(hose)] with the "20" handshape error for "water". The observer saw what Juli had signed, thinking that Juli wanted to eat the rocks in her hand and commented to Juli that she could not eat the rocks. As soon as Juli saw that the observer had interpreted her signing attempt of 'water' being the sign for 'food/eat' she corrected herself and repeated her sign with the 'W' handshape which signaled 'water'. The adult then realized what Juli meant and asked if what she meant was that she wanted to use the water hose and Juli nodded.

All languages can be deconstructed into smaller elements, they are considered levels of languages that are divided into: The Phonological System, the Reference System, the Morphological System, and the Syntactic System. The Phonological System correlates to the different stages that a child acquires language. The acquisition process begins at birth, the brain begins to specialize in the sounds heard around them and begin to produce vowel like sounds. This is the cooing stage. The babbling stage, six to 11 months, is when consonants like /m/ and /b/ are combined with vowels, ma ma ma ba ba ba. The next two stages are the one word stage, 12 to 18 months, and two word stage, 18 months to two years of age. At around two years, the child enters the telegraphic stage, where they learn to put multiple words together. Note that researchers can only estimate the ages in which a child transitions through the stages. This is due to many varying factors when the child is acquiring language, like mental capability, the right language environment, exposure to language, and more. The Phonological System is broken up into two different categories, perception and production. As the child goes through the stage of acquiring the language, perception and production is being developed in the brain. The Fis Phenomenon occurs due to lack of production ability by the kid, though the child perceives the sound to be correct. The relation between perception, production and the Fis Phenomenon is discussed below.

Scoobie et al. in 1996 looked into the notion of child perception and how they acquire their speech as well as how children contrast minimal pairs. Used Children with phonological disorders and focused on /s/ initial stop clusters for their acquisition of them.

In a 1941 study by Roman Jakobson, he hypothesized that children who speak English basically follow a phonological order when acquiring their language's feature distinctions. Stating that children can't fully acquire some distinctions unless some were learned previously. In a 1948 study, Schvachkin hypothesized that Russian speaking children develop phonetic distinctions in an invariant order. A table is then shown where the “hushing” vs “hissing” sibilants were second to last on the order of acquisition. Given that children are still refining and working on their phonetic production skills, it might be the case that these features are not produced accurately because previous ones still need work.

Juliette Blevins claimed that children can perceive both their own use of the language minimal pairs along with the adult usages. Though the child may believe that the subtle differences in their use of the minimal pair can be perceived by the adult, because the child themselves can recognize the differences.