Home: Bayley Hedonic Tone Coding at 14 Months

Description of Test: This test assesses the strength of positive and negative emotion during each of the observed situations. (Easterbrooks, A., & Emde, R. N. (1983). The Hedonic Tone Scales. Unpublished manuscript, University of Colorado Health Sciences Center, Denver.)  To see the form on which the data was recorded, click on the appropriate image below:

Variable Names:  Variable names from this database have the prefix V1HTB (if from the Bayley Hedonic Tone database), or V1HTC (if a composite score from across both the Bayley Hedonic Tone and the Freeplay Hedonic Tone). The Bayley Hedonic Tone database includes 600 test subjects and 109 variables, and adds 11 composite scores and a comment field. Data were collected by viewing video tapes of the Bayley Mental Development testing at the 14 month home visit and recording positive and negative responses in incremental time intervals (30 second intervals). The variables include: Difficulty to Code Rating, Total Time (in seconds), Overall Mood Scale, Coder ID, Time (in seconds) till First Smile, Time (in seconds) till First Fret, Total Number of Frets, and a rating for positive and a rating for negative responses in up to 50 time intervals. Additionally, there are variables for the Start Time (in minutes and seconds) for the HTBAY14 data set, 11 composite variables, and a comment field.   Move there to move to the complete list of variable names from this database.

Cleaning:  The data have been examined to ensure that the values of the variables are within range.

Composites:  There are 11 composite variables: V1HTBAVP, V1HTBAVN, V1HTBSDP, V1HTBSDN, V1HTBAVL, V1HTBSDL, V1HTCAVP, V1HTCAVN, V1HTCAVL, V1HTCOMS, and V1HTCSMI.

V1HTBAVP:
    This variable is the average for the 50 positive ratings from the HTBAY14 database. If more than 6 items were missing in the data, the composite score was entered as missing.

V1HTBAVNL:
    This variable is the average for the 50 negative ratings from the HTBAY14 database. If more than 6 items were missing in the data, the composite score was entered as missing.

V1HTBSDP:
    This variable is the standard deviation of the 50 positive ratings for the HTBAY14 database. If more than 6 items were missing in the data, the composite score was entered as missing.

V1HTBSDN:
    This variable is the standard deviation of the 50 negative ratings for the HTBAY14 database. If more than 6 items were missing in the data, the composite score was entered as missing.

V1HTBAVL:
    This is a measure of the lability of the positive and negative responses. It was computed by first transforming the values of the variables, V1HTBAYP1-V1HTBAYP50 and V1HTBAYN1-V1HTBAYN50, from a scale of 1 to 4 into a scale of 0 to 3, and then adding the scores together. The resulting lability scores (50 for each data set) were then averaged to give an average lability score ranging from 0-6. The lability scores were not retained in the database. If more than 6 lability scores were missing in the data, the composite score was entered as missing.

V1HTBSDL:
    This variable is the standard deviation for the 50 lability scores for the HTBAY14 database. If more than 6 lability scores were missing in the data, the composite score was entered as missing.

Composite variables that use Hedonic Tone from both the Bayley and the Freeplay rating situations:

V1HTCAVP, V1HTCAVN, V1HTCAVL,AND V1HTCOMS
    These 4 variables are the average of the averages for positive responses, negative responses, lability scores, and overall mood scores.
    V1HTCAVP = Mean (V1HTBAVP, V1HTFAVP)
    V1HTCAVP = Mean (V1HTBAVN, V1HTFAVN)
    V1HTCAVL = Mean (V1HTBAVL, V1HTFAVL)
    V1HTCOMS = Mean (V1HTBOMS, V1HTFOMS)

Only one of the two averages was required to calculate the overall average.

V1HTCSMI
    This is a calculation of the percent of positive responses that were smiles. It was computed by counting the number of positive scores (V1HTBAYP1-V1HTBAYP50, V1HTFRP1-V1HTFRP50) with a rating of 3 or 4 in both the HTBAY14 and HTFRP14, and dividing that count by the total number of positive scores (any rating from 1 to 4) in both the HTBAY14 and HTFRP14, and then multiplying by 100.

Complete List of Variable Names: 

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Procedure Description:

Note: This coding is done from videotaped analysis of the child's face during the administration of the Bayley. The following procedure description is taken from the Bayley:

Bayley Scales of Infant Development (Mental Development Scales) and Sequenced Inventory of Communication Development

These two assessments were integrated into one procedure at 14, 20, and 24 months, a more natural and more efficient presentation for children of these ages. The Bayley consists of many tasks representative of problem solving, fine motor coordination, and expressive and receptive vocabulary. Mothers were told that the children’s best performance may depend on either her close proximity or, conversely, her absence during this assessment. Examiners proceeded with each child until a baseline and ceiling of the child’s abilities was obtained. Children who became distressed were permitted to complete testing while sitting on their mother’s lap. The Bayley Scales assessed each child’s level of general cognitive development as compared with other children of the same age.

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