Some potential disadvantages of person-centered therapy include: limited effectiveness for certain psychological disorders, lack of emphasis on specific techniques or strategies, and reliance on the client's ability to self-reflect and make decisions.

Teacher directed instruction follows the traditional "Sage on the stage" philosophy. The teacher is the carrier of all information and will diseminate it to the individual the students in a lecture style format.

Child centered instruction is founded on strategies that use experiential, discovery learning. These strategies provide opportunities for students to learn FROM each other and WITH each other. Group work and chances to come to their own conclusions whether through experiments, research, games, discussions, or hands-on activities.

An audience centered speech is a speech that takes into account the needs, wants, expectations, knowledge level, and background of the audience. An audience centered speech begins by picking a topic that the audience is interested in. The speech should give the audience information that they can immediately use in their lives. An audience centered speech takes into account the speech experience of the audience making sure to incorporate interesting examples, stories, credible information and involves them in the learning process. The speaker should cater to their audience and fulfill some need that they have, help them solve a problem or enrich their lives. An audience centered speech builds in redundancy so that the audience can remember the information to use it later. An audience centered speech is organized and easy for the audience to follow. An audience centered speech uses a variety of delivery strategies and is extemporaneous in nature. When doing an audience centered speech, the audience needs to be considered in every step of the speech making process.

They are three types of crysteline forms present.

1)primary unit centered

2)body centered unit centered

3)face centered unit centered

it was centered in wenji china