Research design - PowerPoint PPT Presentation

Loading...

PPT – Research design PowerPoint presentation | free to download - id: 80f2fa-ZTFmO



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Research design

Description:

History of the English Language - uni-jena.de ... Research design – PowerPoint PPT presentation

Number of Views:22
Avg rating:3.0/5.0
Slides: 36
Provided by: acer166
Learn more at: http://www.personal.uni-jena.de
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Research design


1
Research design
2
Variables
  • Independent variable
  • Dependent variable
  • Levels
  • Responses

3
Variables and conditions
Subjects are given two types of constructions and
are asked to decide whether the given sentence is
grammatical (1) a. I gave him it. Construction
1 b. I gave her the book. c. (2) a. I gave to
him it. Construction 2 b. I gave to her the note
you sent me. c.
4
Variables and conditions
IV (two conditions) DV (forced choice task)
Construction 1 Construction 2 a. grammatical b. ungrammatical
5
Variables and conditions
Subjects are asked to complete copular sentences
with a relative clause. The predicate nominals of
the copular clauses belong to three different
semantic types (1) animate/human (2)
inanimate/object (3) place. (1) a. This is the
man __ b. This is the ball __ c. This is the
place __
6
Variables and conditions
IV DV
1. This is the man __ 2. This is the ball __ 3. This is the place __ a. SUBJ relative clause b. DO relative clause c. IO relative clause d. OBL relative clause e. GEN relative clause
7
Variables and conditions
IV DV
1. This is the man __ 2. This is the thing __ 3. This is the place __ a. SUBJ relative clause b. DO relative clause c. IO relative clause d. OBL relative clause e. GEN relative clause
1. I saw the man __ 2. I saw the thing __ 3. I saw the place __ a. SUBJ relative clause b. DO relative clause c. IO relative clause d. OBL relative clause e. GEN relative clause
8
Interaction
Condition 1 Condition 2
SUBJ 3.5 DO 3.2 IO 2.7 OBL 2.2 GEN 0.6 SUBJ 2.5 DO 3.8 IO 3.2 OBL 0.5 GEN 0.5
9
Types of data
  • Nominal/categorical data
  • Ordinal data
  • Interval data

10
Type of analysis
  • Correlational analysis
  • Difference test

11
Type of analysis
Correlational test Difference test
Pearsons r Kendalls tau T-test ANOVA
12
Confound variable
(1) the man who talked to Mary. (2) the car
that caused the accident. (3) the man who Mary
talked to. (4) the car that Peter bought.
13
Confound variable
(1) the man who talked to Mary. (2) the car
that caused the accident. (3) the man who Mary
talked to. (4) the car that Peter bought.
14
Confound variables
  • Control
  • Randomization

15
Sampling
  • Simple random sampling
  • Stratified random sampling
  • Systematic sampling
  • Cluster sampling

16
Related and independent design
  • Within subjects design related design
    repeated measures design
  • Between subjects design unrelated design
    independent design

17
Advantages of within subjects design
  • Reduction of inter-individual differences
  • Fewer subjects

18
Disdvantages of within subjects design
Responses to IVs/conditions can influence each
other
  • Subjects recognize the purpose of the study.
  • Subjects get tired, frustrated, excited.
  • Subjects get habituated to the task.

19
Counterbalancing
Counterbalancing serves to eliminate the
ordering effect.
  • ABBA
  • AB - BA

20
Counterbalancing
1. ABC 2. ACB 3. BAC 4. CAB 5. BCA 6. CBA
21
Experimental design
A child language researcher wants to find out if
the meaning of the head of a relative clause
influences the interpretation of the acquisition
of relative clauses in early child speech.
Specifically, he wants to know if animate and
inanimate head nouns affect childrens
interpretation of relative clauses. In this
study, he concentrates on the two most frequent
types of relative clauses in which the subject
and object are relativized (i.e. expressed by the
relative pronoun).
22
Experimental design
(1) Das ist der Mann, der das Mädchen gestern
gesehen hat. (2) Das ist der Mann, den das
Mädchen gestern gesehen hat. (3) Das ist der
Ball, der das Mädchen am Kopf getroffen
hat. (4) Das ist der Ball, den das Mädchen mit
dem Kopf getroffen hat.
23
Experimental design
(1) Das ist der Mann, der das Mädchen gestern
gesehen hat. (2) Das ist der Mann, den das
Mädchen gestern gesehen hat. (3) Das ist der
Ball, der das Mädchen am Kopf getroffen
hat. (4) Das ist der Ball, den das Mädchen mit
dem Kopf getroffen hat.
24
Experimental design
Animate head Inanimate head
Subject
Object
25
Central tendency
Data 2, 3, 3, 3, 4, 6, 6, 9, 12, 13, 13
Mean 23334669121313
6.72
11
Median 2, 3, 3, 3, 4, 6, 6, 9, 12, 13, 13
6
Mode 2, 3, 3, 3, 4, 6, 6, 9, 12, 13, 13
3
26
Variance and SD
(x1 x)2 N- 1
27
Variance
S words
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4

28
Variance
S words
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4
? 59 / 8 7.4 (mean)
29
Variance
S words (X1 Xmean)
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4 3 7.4 7 7.4 4 7.4 9 7.4 12 7.4 9 7.4 11 7.4 4 7.4
? 59 / 8 7.4 (mean)
30
Variance
S words (X1 Xmean) d1
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4 3 7.4 7 7.4 4 7.4 9 7.4 12 7.4 9 7.4 11 7.4 4 7.4 4.4 0.4 3.4 1.6 4.6 1.6 3.6 3.4
? 59 / 8 7.4 (mean)
31
Variance
S words (X1 Xmean) d1
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4 3 7.4 7 7.4 4 7.4 9 7.4 12 7.4 9 7.4 11 7.4 4 7.4 4.4 0.4 3.4 1.6 4.6 1.6 3.6 3.4
? 59 / 8 7.4 (mean) ? 0 / 8 0
32
Variance
S words (X1 Xmean) d1 d12 (residuals)
1 2 3 4 5 6 7 8 3 7 4 9 12 9 11 4 3 7.4 7 7.4 4 7.4 9 7.4 12 7.4 9 7.4 11 7.4 4 7.4 4.4 0.4 3.4 1.6 4.6 1.6 3.6 3.4 19.36 0.16 11.56 2.56 21.16 2.56 12.96 11.56
? 59 / 8 7.4 (mean) ? 0 / 8 0 ? 81.87
33
Variance
81.87 8 - 1
11.7
34
Standard Deviation
81.87 8 - 1
3.42
35
Standard Deviation
70 of all data points fall within 1 SD.
Mean /- SD range of 70 of the data
7.4 /- 3.42 3.98 10.82 words
About PowerShow.com