Case Study of Genie - Critical Period Hypothesis

CRITICAL Critical Period PERIOD Ducklings after hatching L2 Acquisition for L2 morphology and syntax to reach native levels exposure to the L2 must begin before age 15 1) attaining to native-like levels of proficiency 2) More concious effort than in earlier L2 acquisition

If the same goes for language acquisition After critcal period Evidence First Language ?

Various perspectives for inquiry are appropriate in differentcritical situations. If it is to identify all the problems withcooperative practices of inquiry, it must be able to occupy and accountfor a variety of perspectives. Only then will it enable publicreflection among free and equal participants. Such problems haveemerged for example in the practices of inquiry surrounding thetreatment of AIDS. The continued spread of the epidemic and lack ofeffective treatments brought about a crisis in expert authority, an“existential problematic situation” in Dewey's sense (Dewey 1938,492). By defining expert activity through its social consequences andby making explicit the terms of social cooperation between researchersand patients, lay participants reshape the practices of gaining medicalknowledge and authority (Epstein 1996, Part II). The affected publicchanged the normative terms of cooperation and inquiry in this area inorder that institutions could engage in acceptable first-order problemsolving. If expertise is to be brought under democratic control,reflective inquiry into scientific practices and their operative normsis necessary (Bohman 1999a). This public challenge to the norms onwhich expert authority is based may be generalized to all forms ofresearch in cooperative activity. It suggests the transformation ofsome of the epistemological problems of the social sciences into thepractical question of how to make their forms of inquiry and researchopen to public testing and public accountability. This demand alsomeans that some sort of “practical verification” of criticalsocial inquiry is necessary.

What Is the Critical Period Hypothesis? (with picture)

Figure out, for example, what sorts of things you are going to have to do to solve it.

In our example, U=3. Is this evidence in support of the null or research hypothesis? Before we address this question, we consider the range of the test statistic U in two different situations.

Start studying critical period for language acquisition?

Autopsies of the animals demonstrated the cells associated with seeing and binocular vision became atrophic (smaller in size). These results only occurred if the disruption in the visual experience happened early in life. Thus, early visual experience changed how the cells responded, what the animals saw, and how the cells looked. Altering visual experience via patching, blurring of vision or surgery did not effect older animals as much. The period of time in which the cells changed from alteration of visual experience is known as the .It is of important interest to note that intense Vision Therapy after the end of the critical period still resulted in improvement in vision and binocularity in these animals. Thus, the critical period is only the time of neurological plasticity.

wiTh The critcal period hypoThesis Critcal period ..

So, if one of the best things you can do to develop your ability to think critically is to become conscious of applying a series of questions to whatever you read, then what are some of these questions? The expert answer is that the questions that are important to ask will become evident from the structure of the material you are reading. This, of course, prompts us to ask, "How do the materials provide the questions?" Well, we've already seen a basic form of this through our discussion of the Q step in SQ3R where we translate headings into questions to establish our purpose for reading. Earlier, too, we talked about how the reading we do can be described as belonging to one or more organizational forms such as description of a process, compare and contrast, and so on. If you have been able to tune into the way a reading is organized (and, therefore, into what is likely the author's purpose), then developing questions is really not all that hard. It helps to have a list of possible questions that are applicable in a wide variety of circumstances to get yourself started. And, soon, you will develop specific questions for yourself either as a result of how you are interpretting the material or as a result of other questions you have asked.