Should parents buy cell phones for their children?

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on vocabulary words:
No of characters: 431.0 578.828451883 74% => Need more words or more difficult words.
No of words: 110.0 151.265690377 73% => More words wanted. You may: choose simpler words or speak faster or remove hesitations or remove long pauses, and fully use the time, do NOT save one or two seconds.
Chars per words: 3.91818181818 3.82278263415 102% => OK
Fourth root words length: 3.23853184046 3.50058242952 93% => OK
Word Length SD: 1.72748802486 1.80425224433 96% => OK
Unique words: 85.0 92.4686192469 92% => More unique words wanted.
Unique words percentage: 0.772727272727 0.61298525976 126% => OK
Syllable count: 131.4 182.283891213 72% => The syllable count is low.
Avg_syllables_per_word: 1.2 1.20543933054 100% => OK

Performance on coherence:
Topic speech coherence ratio: 0.105853051059 0.0839705835288 126% => OK

Acoustic performance on paragraphs:
How many acoustic paragraphs: 6.0 4.47071129707 134% => OK
Average paragraph length: 18.3333333333 65.8948926009 28% => The average paragraph length is low.
STD paragraph length: 21.1239726903 19.7758100068 107% => OK
Average paragraph duration: 7.58 25.5208953607 30% => The speaking content is not well organized.
STD paragraph duration: 8.4969072805 7.49434385956 113% => OK

Acoustic performance on sentences:
How many acoustic sentences: 35.0 42.9832635983 81% => OK
Average acoustic sentence length: 3.14285714286 3.78147595546 83% => OK
STD acoustic sentence length: 1.62380254153 2.94285465224 55% => OK
Average acoustic sentences duration: 1.18628571429 1.39386743896 85% => OK
STD acoustic sentences duration: 0.60960917557 0.967747756167 63% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 34.0 40.4456066946 84% => OK
Total acoustic silence duration: 7.49 7.59280334728 99% => OK
Average acoustic silence duration: 0.220294117647 0.19053887516 116% => OK
STD acoustic silence duration: 0.176576683794 0.157467062838 112% => OK

Acoustic performance on acoustic words:
Total word duration: 34.2 46.3453556485 74% => Need to talk more.
Average word duration: 0.310909090909 0.308780311121 101% => OK
STD word duration: 0.167057668075 0.201157623399 83% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 8.0 8.09623430962 99% => OK
Total_disfluencies_duration: 5.43 6.56692468619 83% => OK
Total acoustic noise duration: 2.28 3.53066945607 65% => OK

Acoustic rates:
Total speech duration: 45.48 59.5455230126 76% => Talk more. Do not save time. People can talk 4-5 words in one second.
Compare to expected duration: 0.758 0.992425383543 76% => Some seconds left. Need to talk more.
Rate of silence: 0.747581354442 0.681803438845 110% => OK
Rate of speech: 2.41864555849 2.53813033465 95% => OK
Rate of speech by unique words: 1.8689533861 1.55221717717 120% => OK
Rate of word duration by unique words: 2.48538011696 1.99939622689 124% => OK
Average articulation rates: 0.248428072727 0.309613076454 80% => OK

---------------------

Rates: 55.0 out of 100
Scores by speech e-grader: 16.5 Out of 30
---------------------
Note: the speech e-grader does NOT examine the meaning of words and ideas.