Slips Of The Tongue Slips of the tongue Describe the three types of slips of the tongue and explain why they might occur. Provide examples of slips of the

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Slips of the tongue

Describe the three types of slips of the tongue and explain why they might occur. Provide examples of slips of the tongue.  Locate scholarly research on slips of the tongue.  Compare and contrast what you had found to Freud’s view that slips of the tongue represent the subconscious.

Cite any sources you use using the APA format on a separate page.

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SU_PSY3001_Cognitive
© 2009 South University

Language Acquisition

Babble to Speech

Infants go through predictable stages when learning to speak. Young infants are attentive to
voices and make speech-like sounds themselves.

They begin with babbling. Then, they start saying single words, and, finally, graduate to saying
two- and three-word phrases.

Four- and five-year-old children have a large vocabulary and can include several ideas in one
sentence.

Acoustics: Infant vs. Adult

Different languages contain different types of acoustic information that is often not perceptible to
nonnative adults. In contrast, infants are sensitive to acoustical differences in all languages but
slowly lose their ability to hear these differences. In this way, they tune in to their native language.

Critical Period

Language acquisition occurs during what is called a critical period. If children are not exposed to
a language by the time they are three years old, they will have great difficulty in learning the
language. The fact that the process of language development is similar regardless of the specific
language environment leads some psychologists to say that speech is special.

Categorical Perception

Another piece of evidence that is used to support the speech-is-special idea is that of categorical
perception. It is the perception of different stimuli as being categorically different.
Consonant-vowel pairs such as ba, da, and ga differ in the acoustical properties of the consonant
segment. When the difference between two such consonant-vowel pairs reaches a certain point,
called the category boundary, listeners suddenly hear a new consonant-vowel pair. However, the
acoustical parameters can vary quite a bit without being noticed by nonnative speakers.

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SU_PSY3001_Cognitive
© 2009 South University

This image is a spectrogram of the phonemes ba, da, and ga. (A phoneme is the basic unit of
sound that contrasts between different sound utterances.) A spectrogram represents time on the
x-axis, frequency in Hertz (Hz) on the y-axis, and intensity in orange (low) � red (high). The
bottom portion of the image (white background) represents the sound waves of the phonemes.

Although the acoustical changes are continual, the listener’s perception changes only at a certain
point.

When this phenomenon was first discovered, it was thought to be unique to speech. However,
categorical perception has since been demonstrated in several aspects of music and a few other
nonspeech stimuli.

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