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44 Cards in this Set
- Front
- Back
Visual Displays
four categories |
1) Data maps
2) Time series graphics 3) Narrative graphics of space and time 4) Relational graphics |
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Data map
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A map that convery statistical information with respect to area and location
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Time Series Graphics
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A graphical display that has a "time series scale on the hoirzontal axis and a quantitative sacle on the vertical access. Time progress from left to right.
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Time Series Graphics- Narrative graphics of space and time
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Narrative graphics of space and time- a times series display with addition of spatial information (march of Napoleon's army, life cycle of a beetle)
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Time Series Graphics- Relational graphics
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A graphic that displays one variable quantity in rleationship to another variable quantity (relating 2 variables- cig consumtion and death- shows correlations)
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Emphasized the use of statistic graphics in behavior analysis in 1956
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Skinner
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Experimental Control
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A predictable change in an indivdiual's behaviror that can be reliably and repeatedly produced by the systematic maniulation of some aspect of the person's environment
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Data
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The quantitative (#s) results of planned, deliberate and usually controlled observation
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Dependent Variable
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target behavior of a study (the measurable dimensions of a target behavior)
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Independent Variable
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the particular arrangement of environmental events that the experimenter manipulates during a study
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Benefits of Graphic Display of Behavioral Data
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1) Ongoing access when plotted immediately
2) Direct and continuous contact-can explore interesting variations 3) use as judgement aides 4) conservative method to determine significante of behavior change 5) indepdent judgments and interpretations of the meaning and significance of behavior change |
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The most commonly use graphic format in the display of data in beahvior analysis
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Line Graphs (a time series graph)
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Seven parts of a simple line graph
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1) Horizontal Axis (x-axis)
2) Vertical Axis (y-axis) 3) Phase/condtiion change lines 4) Phase/condition labels 5) Data points 6) Data path 7) Figure legend |
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Most common type of vertical axis in behavior analysis
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equal-inteval vertical axis
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Maximum number of data paths that can be shown effectively on a line graph
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three
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4 Other types of graphs
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1) Bar graph
2) Cumulative record 3) Standard Celeration Charts 4) Charts-logarithmic vertical axes (semi-logarithmic charts) |
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Bar Graph
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displays quantitative information by means of a series of vertical rectngles (sed to compare the values of multiple entities at a given point in time)
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Example of a cumulative record
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A cumulative record of key pecking by a pigeon
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Semilogarithmic charts
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Has a logarithmic scale on one axis and a linear scale on th other (sometimes reffered to as a rate-of change or ratio graphic) Looks t how fast something is changing
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Standard Celeration Chart covered two universal dimensions of all behavior
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count and time
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Standard Celeration Chart
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34 degrees slope, or doubling (x2)
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Scatterplot
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shows the relative distribution of indivdiual mesres in a data set
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Axes proportions recommended by Cooper et. al.
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2/3 = 66% difference of vetical to horizontal axis
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Used to represent discontinuity of time on the horizontal axis
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scale breaks
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Tick marks
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Help view decode information on graph rapidly.
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Vetical lines used to indicatea change in treatment of experiemental procedures
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condition change lines
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labels used to indicate a change in treatment of experimental procedures
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condition change labels
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Data paths
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created by drawing astraight line from the center of each data point in a given data set t othe center of the next data point
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Figure legend
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A concise but complete description of the figure
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Visual analysis
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The primary strategy of applied researchers use for analyzing data collected within the context of single subject research
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Guidline for minimum number of data points
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minimum of three data point colleted over a minimum of two days should be plotted if the data are stable (but, the more the better)
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Variability
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the bounce inherent in the data path
if high, suggests lack of experimental control. The higher the variability the more data needs to be be collected to determine a predictable pattern of behavior |
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Level
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the average of the data within a condition and is typically calculated as the mean of median
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Trend
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The overall direction of the data path (increasing, decreasing, maintaining or zero trend)
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Analying graphic data
Stability of baseline |
when baseline data drift in the directin of the intervention it is difficult to analyze claims of the intervention.
-Stable baselines or baselines in the opposite direction of the intervention shelp determine change is attributed to the intervention |
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Analying graphic data
Variability within Phases |
allows us to determine the degree to the effect we have or do not have control
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Analying graphic data
Variability between phases |
-Variable baseline followed by stabe intervention data + degree of experimental control.
-Variable baseline followed by stabe intervention tht don't exceed baseline level = lesser degree of ec. -Variable baseline followed by variable intervention data = weak ec |
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Analying graphic data
Overlap between data of adjacent phases |
degree of overlap between phases indicates how convincing the intervention is. High degree of overlap=little effect
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Analying graphic data
Number of data points in each phase |
more data points are neessary if there is a high degree of variability, overlap, or data drift
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Analying graphic data
Changes in trend within phase |
becomes more difficult to determine if the change during the intervention was responsibile for the observed change.
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Analyzing Graphic Data
Changes in tend between adjacnt phases |
the degree and direction of the trend compared to baseline reflect the intervention effect
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Analyzing Graphic Data
Changes in level between phases |
changes in level show the effectivenes, or lack of, of an intervention
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Analyzing Graphic Data
Analysis of data across similar hases Changes in trend within phases |
beyond changes within phases andbetween adjacent phases, examining the consistency of data across similar phases provides information on the overall effectiveness of an intervention
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Analyzing Graphic Data
Evaluation of the overall pattern of the data |
evaluate the impact of the whole set of data as a bais to judge the success or failure of an experiment.
Look at within and between conditions |